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Ambient stream biological monitoring site

Trapper Cr at Trapper Cr Wilderness

Photo of stream from sample site

Site details

project Ambient ecoregion Cascades
latitude 45.89458 county Skamania
latitude -122.0134 land use wilderness
elevation (ft) 1495 reference site True
stream order 2 map link

Years when sampling has occurred:

08 07 06 05 04 03 02 01 00 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81

Site comment:

1) Selected as one of ten core reference sites to be monitored annually starting in 2002. 2) This stream belongs to a class of streams that have boulder-dominated substrates and turbulent surface water during high flow portions of the year. The boulder substrates are more difficult to sample with conventional benthic macroinvertebrate collection devices, and may lead to elevated sampling variability.
For explanation on this site summary and any visit report below, see site summary and visit report keys.

Site visit reports:

Trapper Cr at Trapper Cr Wilderness

Habitat measurements and taxa metrics - October 11, 2004

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
9.10.5112.47.654

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle125.03.00  1.50.42 0.411.749.80.12
DKICKriffle230.13.00  1.70.30 0.710.649.50.15
DKICKriffle342.13.00  1.50.54 0.401.053.20.15
DKICKriffle437.74.00  2.50.39 0.351.746.80.12

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1   6%20%30%44%   
2   2%2%24%66%6%  
3    6%44%30%20%  
4     10%70%20%  

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
1    2%4%   6%9%17%22%19%22% 
2 3% 2%2%2%2%3%3%7%7%3%21%13%33% 
3 8%   2%3%  5%5%10%12%19%36% 
4   2%    2%8%11%6%19%11%42% 

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 0.97

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited61%29%
(1)
6%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited9
(3)
44
(3)
102910

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited259.464
(5)
910%30%6%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited619
(5)
18%18%10%
(5)
48%
(3)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #2412

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.76
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100557       	Cinygmula sp.       	    563      	   10.4
115453       	Hydropsyche sp.     	    523      	    9.7
68510        	Enchytraeidae       	    375      	    6.9
69380        	Glossiphonia        	    336      	    6.2
100817       	B. tricaudatus      	    336      	    6.2
114167       	Heterlimnius sp.    	    326      	    6.0
102594       	Z. cinctipes        	    306      	    5.7
119656       	Antocha sp.         	    267      	    4.9
103273       	Sweltsa grp.        	    227      	    4.2
100572       	Rhithrogena sp.     	    217      	    4.0
101233       	Ephemerella sp.     	    217      	    4.0
68440        	Lumbriculidae       	    188      	    3.5
129952       	Rheotanytarsus      	    178      	    3.3
116958       	Micrasema sp.       	    118      	    2.2
116065       	N. occidentis       	    118      	    2.2
129657       	Polypedilum         	     99      	    1.8
82754        	Acarina             	     89      	    1.6
P630         	R. Brunnea grp.     	     79      	    1.5
116794       	Lepidostoma sp.     	     69      	    1.3
101187       	Paraleptophlebia sp.	     69      	    1.3
53964        	Turbellaria         	     49      	    0.9
101368       	D. doddsi           	     39      	    0.7
103102       	Skwala sp.          	     39      	    0.7
100635       	E. grandis          	     39      	    0.7
100504       	Heptageniidae       	     39      	    0.7
J977         	Z. Oregonensis grp. 	     39      	    0.7
P622         	R. Betteni grp.     	     39      	    0.7
102994       	Perlodidae          	     39      	    0.7
121027       	Dicranota sp.       	     39      	    0.7
128874       	Orthocladius        	     30      	    0.6
102615       	V. cataractae       	     30      	    0.6
102842       	D. augusta          	     30      	    0.6
102914       	Perlidae            	     20      	    0.4
102986       	C. californica      	     20      	    0.4
127338       	Ceratopogoninae sp. 	     20      	    0.4
114197       	A. dispar           	     20      	    0.4
115114       	R. Sibirica grp. - p	     20      	    0.4
116847       	Lepidostoma togatum 	     20      	    0.4
P656         	R. Hyalinata grp.   	     10      	    0.2
568521       	Cricotopus (Cricotop	     10      	    0.2
568516       	Cricotopus (Nostococ	     10      	    0.2
100666       	Ironodes sp.        	     10      	    0.2
136377       	Oreogeton sp.       	     10      	    0.2
100996       	Ameletus sp.        	     10      	    0.2
115155       	R. Sibirica grp. - n	     10      	    0.2
120094       	Hexatoma sp.        	     10      	    0.2
103121       	Doroneuria sp.      	     10      	    0.2
101385       	D. spinifera        	     10      	    0.2
Z730         	Tvetenia Bavarica Gr	     10      	    0.2
114139       	L. avara            	     10      	    0.2
103236       	Kathroperla sp.     	     10      	    0.2
126774       	Simulium sp.        	     10      	    0.2

Trapper Cr at Trapper Cr Wilderness

Habitat measurements and taxa metrics - October 14, 2003

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Visit comment

Tailed frogs present

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
9.511.10.17.475

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle17.69.00  1.70.33 0.351.819.00.09
DKICKriffle29.04.00  2.50.45 0.251.114.50.12
DKICKriffle38.91.50  2.80.24 0.462.012.70.15
DKICKriffle411.36.00  0.50.27 0.440.315.1 

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    20%16%64%   
2     14%82%4%  
3   4%10%16%56%14%  
4    8%36%56%   

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
1                
2                
3                
4                

Taxa: RIVPACS score

RIVPACS not available.

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)

Taxa: sample results (individuals-per-square-meter estimates)

sample #2060

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.76
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
115453       	Hydropsyche sp.     	    204      	   28.3
101233       	Ephemerella sp.     	     84      	   11.7
116958       	Micrasema sp.       	     83      	   11.5
102594       	Z. cinctipes        	     61      	    8.5
100557       	Cinygmula sp.       	     28      	    3.9
100626       	Epeorus sp.         	     25      	    3.5
116933       	Amiocentrus sp.     	     21      	    2.9
100666       	Ironodes sp.        	     21      	    2.9
119656       	Antocha sp.         	     16      	    2.2
117159       	Glossosoma sp.      	     16      	    2.2
114167       	Heterlimnius sp.    	     14      	    1.9
82754        	Acarina             	     12      	    1.7
129952       	Rheotanytarsus      	     11      	    1.5
103273       	Sweltsa grp.        	     11      	    1.5
128477       	Brillia             	      9      	    1.2
102986       	C. californica      	      8      	    1.1
101187       	Paraleptophlebia sp.	      8      	    1.1
100572       	Rhithrogena sp.     	      7      	    1.0
116794       	Lepidostoma sp.     	      7      	    1.0
115530       	A. grandis          	      7      	    1.0
101368       	D. doddsi           	      5      	    0.7
114093       	Elmidae             	      5      	    0.7
P622         	R. Betteni grp.     	      5      	    0.7
100817       	B. tricaudatus      	      5      	    0.7
100635       	E. grandis          	      4      	    0.6
68510        	Enchytraeidae       	      4      	    0.6
J977         	Z. Oregonensis grp. 	      4      	    0.6
102995       	Isoperla sp.        	      3      	    0.4
102615       	V. cataractae       	      3      	    0.4
102994       	Perlodidae          	      3      	    0.4
P630         	R. Brunnea grp.     	      3      	    0.4
101347       	Caudatella sp.      	      3      	    0.4
136305       	Chelifera sp.       	      3      	    0.4
116039       	Oligophlebodes sp.  	      3      	    0.4
101385       	D. spinifera        	      1      	    0.1
102840       	Leuctridae          	      1      	    0.1
103121       	Doroneuria sp.      	      1      	    0.1
114164       	Cleptelmis sp.      	      1      	    0.1
115933       	Limnephilidae       	      1      	    0.1
Y820         	Eukiefferiella Pseud	      1      	    0.1
116065       	N. occidentis       	      1      	    0.1
125392       	Maruina sp.         	      1      	    0.1
129197       	Tvetenia            	      1      	    0.1
135830       	Empididae           	      1      	    0.1
53964        	Turbellaria         	      1      	    0.1
568521       	Cricotopus (Cricotop	      1      	    0.1
84195        	Ostracoda           	      1      	    0.1
P656         	R. Hyalinata grp.   	      1      	    0.1
115560       	P. elsis            	      1      	    0.1

Trapper Cr at Trapper Cr Wilderness

Habitat measurements and taxa metrics - August 7, 2002

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
10.10.88.997.567

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle17.02.00  1.80.33 0.381.616.50.09
DKICKriffle27.11.00  1.40.73 0.180.321.50.09
DKICKriffle37.57.00  2.30.30 0.211.817.10.15
DKICKriffle410.54.00  1.70.24 0.561.419.40.12

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    20%20%28%32%  
2    12%30%50%8%  
3     10%44%46%  
4    4%14%46%36%  

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
1  1%2%2% 2% 2%5%3%9%5%7%12% 
21%1%   1%2%4%2%2%4%6%10%3%11%5%
3 2% 1%  2%3%7%3%1%8%2%4%5%12%
46%   1%  3%5%1%5%6%6%10%13% 

Taxa: RIVPACS score

RIVPACS not available.

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited53%42%
(3)
17%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited13
(5)
51
(3)
53214

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited2411.625
(1)
53%55%34%
(1)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited520
(5)
4%8%13%
(5)
28%
(1)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #1838

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.76
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100817       	B. tricaudatus      	    233      	   31.4
126774       	Simulium sp.        	     87      	   11.7
128874       	Orthocladius        	     82      	   11.1
82754        	Acarina             	     57      	    7.7
568515       	Cricotopus Isocladiu	     20      	    2.7
68510        	Enchytraeidae       	     17      	    2.3
129890       	Micropsectra        	     16      	    2.2
102994       	Perlodidae          	     16      	    2.2
101399       	S. tibialis         	     16      	    2.2
59490        	Nematoda            	     13      	    1.8
101368       	D. doddsi           	     12      	    1.6
119656       	Antocha sp.         	      9      	    1.2
Y820         	Eukiefferiella Pseud	      8      	    1.1
115398       	Hydropsychidae      	      7      	    0.9
115530       	A. grandis          	      7      	    0.9
114093       	Elmidae             	      7      	    0.9
100504       	Heptageniidae       	      7      	    0.9
116046       	Neophylax sp.       	      7      	    0.9
129197       	Tvetenia            	      7      	    0.9
102914       	Perlidae            	      5      	    0.7
116905       	Brachycentridae     	      5      	    0.7
103273       	Sweltsa grp.        	      5      	    0.7
114167       	Heterlimnius sp.    	      5      	    0.7
53964        	Turbellaria         	      5      	    0.7
100557       	Cinygmula sp.       	      5      	    0.7
Y800         	Eukiefferiella Devon	      5      	    0.7
Y810         	Eukiefferiella Grace	      5      	    0.7
129935       	Paratanytarsus      	      5      	    0.7
102594       	Z. cinctipes        	      4      	    0.5
101370       	D. grandis          	      4      	    0.5
100996       	Ameletus sp.        	      4      	    0.5
100666       	Ironodes sp.        	      4      	    0.5
116933       	Amiocentrus sp.     	      4      	    0.5
P656         	R. Hyalinata grp.   	      4      	    0.5
128236       	Thienemannimyia     	      4      	    0.5
111963       	Dytiscidae          	      3      	    0.4
100835       	Baetis flavistriga  	      3      	    0.4
100755       	Baetidae            	      3      	    0.4
102596       	Z. columbiana       	      3      	    0.4
P630         	R. Brunnea grp.     	      3      	    0.4
128477       	Brillia             	      3      	    0.4
128401       	Pagastia            	      3      	    0.4
115097       	Rhyacophila sp.     	      3      	    0.4
101365       	Drunella sp.        	      1      	    0.1
129182       	Thienemanniella     	      1      	    0.1
P622         	R. Betteni grp.     	      1      	    0.1
100626       	Epeorus sp.         	      1      	    0.1
P610         	R. Angelita grp.    	      1      	    0.1
100637       	E. longimanus       	      1      	    0.1
68473        	Eclipidrilus        	      1      	    0.1
136377       	Oreogeton sp.       	      1      	    0.1
117159       	Glossosoma sp.      	      1      	    0.1
130915       	Glutops sp.         	      1      	    0.1
115935       	Apatania sp.        	      1      	    0.1
129086       	Rheocricotopus      	      1      	    0.1
128978       	Parametriocnemus    	      1      	    0.1
115165       	R. arnaudi          	      1      	    0.1
121027       	Dicranota sp.       	      1      	    0.1
101389       	D. coloradensis     	      1      	    0.1

Trapper Cr at Trapper Cr Wilderness

Habitat measurements and taxa metrics - September 11, 2001

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
13.10.2 7.393

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle17.21.00  0.90.27  0.914.1 
DKICKriffle27.52.00  2.30.43  1.216.5 
DKICKriffle38.65.00  4.00.27  3.515.0 
DKICKriffle49.76.00  1.50.21  1.214.9 

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    10%22%62%6%  
2    4%28%52%16%  
3    14%24%40%22%  
4     30%46%24%  

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
1     2%4%6%4% 2%22%24%18%14%4%
2    2%4%12%8%10%8%10%2%8%8%16%12%
3 2%2%  2% 10%6%6%12%10%6%12%20%12%
4  2%  4% 4%10%10%12%12%10%20%10%6%

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 1.18

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited67%39%
(3)
10%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited11
(3)
45
(3)
82910

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited2311.674
(5)
810%39%21%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited720
(5)
21%10%8%
(5)
42%
(3)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #1233

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.75
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100817       	B. tricaudatus      	    127      	   20.7
68510        	Enchytraeidae       	     58      	    9.5
115453       	Hydropsyche sp.     	     50      	    8.2
100572       	Rhithrogena sp.     	     47      	    7.7
129890       	Micropsectra        	     46      	    7.5
100635       	E. grandis          	     43      	    7.0
82754        	Acarina             	     24      	    3.9
117159       	Glossosoma sp.      	     23      	    3.8
114167       	Heterlimnius sp.    	     21      	    3.4
119656       	Antocha sp.         	     17      	    2.8
103273       	Sweltsa grp.        	     17      	    2.8
P656         	R. Hyalinata grp.   	     13      	    2.1
P622         	R. Betteni grp.     	     12      	    2.0
116046       	Neophylax sp.       	     11      	    1.8
102594       	Z. cinctipes        	     10      	    1.6
54512        	Polycelis coronata  	      9      	    1.5
116794       	Lepidostoma sp.     	      8      	    1.3
101368       	D. doddsi           	      8      	    1.3
103102       	Skwala sp.          	      7      	    1.1
116958       	Micrasema sp.       	      7      	    1.1
100557       	Cinygmula sp.       	      5      	    0.8
128978       	Parametriocnemus    	      3      	    0.5
P630         	R. Brunnea grp.     	      3      	    0.5
129975       	Sublettea           	      3      	    0.5
103237       	Kathroperla perdita 	      3      	    0.5
102986       	C. californica      	      2      	    0.3
128477       	Brillia             	      2      	    0.3
129086       	Rheocricotopus      	      2      	    0.3
114197       	A. dispar           	      2      	    0.3
101187       	Paraleptophlebia sp.	      2      	    0.3
68440        	Lumbriculidae       	      2      	    0.3
128689       	Eukiefferiella      	      2      	    0.3
100666       	Ironodes sp.        	      2      	    0.3
128575       	Cricotopus          	      2      	    0.3
128563       	Corynoneura         	      2      	    0.3
126774       	Simulium sp.        	      2      	    0.3
84195        	Ostracoda           	      2      	    0.3
101347       	Caudatella sp.      	      2      	    0.3
568598       	D. hageni           	      1      	    0.2
101385       	D. spinifera        	      1      	    0.2
102842       	D. augusta          	      1      	    0.2
102972       	H. pacifica         	      1      	    0.2
129197       	Tvetenia            	      1      	    0.2
114205       	Zaitzevia sp.       	      1      	    0.2
115114       	R. Sibirica grp. - p	      1      	    0.2
115530       	A. grandis          	      1      	    0.2
P662         	Rhyacophila Iranda g	      1      	    0.2
127338       	Ceratopogoninae sp. 	      1      	    0.2
128401       	Pagastia            	      1      	    0.2
103121       	Doroneuria sp.      	      1      	    0.2

Trapper Cr at Trapper Cr Wilderness

Habitat measurements and taxa metrics - October 5, 2000

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Visit comment

Take the unpaved road along the cabins, past the big brown bear and take the trail that is near the big bend in the road. Take the trail for 100 to 200 meters. A side trail goes to the river, where a windfall/bridge with rails spans the creek. The reach starts about 50 yards upstream from the bridge, upstream from a tributary entering into the mainstem.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
9.310.57.657.885

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle15.85.000.19 0.40.30 0.790.322.9 
DKICKriffle25.64.000.19 0.80.30 0.570.422.1 
DKICKriffle37.68.000.19 1.60.20 0.661.126.4 
DKICKriffle46.04.000.19 2.10.30 0.911.428.9 

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    5%9%32%6%  
2    4%9%37%   
3    4%9%35%2%  
4    5%18%27%   

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 1.14

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0numerically composited92%29%1%
DKICKriffle1replicate88%26%1%
DKICKriffle2replicate87%33%3%
DKICKriffle3replicate92%43%3%
DKICKriffle4replicate94%25%1%

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0numerically composited144310328
DKICKriffle1replicate10428279
DKICKriffle2replicate124310308
DKICKriffle3replicate114211319
DKICKriffle4replicate9349235

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0numerically composited2711.73271%47%5%
DKICKriffle1replicate2411.75240%51%2%
DKICKriffle2replicate2711.76363%35%7%
DKICKriffle3replicate2611.522110%43%11%
DKICKriffle4replicate1911.47251%71%4%

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0numerically composited51856%9%9%66%
DKICKriffle1replicate71958%7%6%65%
DKICKriffle2replicate61945%13%7%57%
DKICKriffle3replicate61942%12%16%65%
DKICKriffle4replicate31473%7%5%82%

Taxa: sample results (individuals-per-square-meter estimates)

5 samples: #2466 (riffle composite), #553 (riffle 1), #554 (riffle 2), #555 (riffle 3), #556 (riffle 4)

sample #2466

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.75
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
117159       	Glossosoma sp.      	    323      	   25.3
100589       	R. robusta          	    140      	   11.0
116046       	Neophylax sp.       	    135      	   10.6
115453       	Hydropsyche sp.     	    107      	    8.4
100557       	Cinygmula sp.       	     91      	    7.1
100817       	B. tricaudatus      	     61      	    4.8
114167       	Heterlimnius sp.    	     36      	    2.8
116794       	Lepidostoma sp.     	     30      	    2.4
103273       	Sweltsa grp.        	     30      	    2.4
101187       	Paraleptophlebia sp.	     28      	    2.2
116958       	Micrasema sp.       	     25      	    2.0
102594       	Z. cinctipes        	     23      	    1.8
116934       	A. aspilus          	     18      	    1.4
119656       	Antocha sp.         	     18      	    1.4
101368       	D. doddsi           	     15      	    1.2
101232       	Ephemerellidae      	     15      	    1.2
100635       	E. grandis          	     15      	    1.2
82754        	Acarina             	     13      	    1.0
102986       	C. californica      	     10      	    0.8
102994       	Perlodidae          	     10      	    0.8
103202       	Chloroperlidae      	     10      	    0.8
68422        	Oligochaeta         	     10      	    0.8
129228       	Chironominae sp.    	     10      	    0.8
115530       	A. grandis          	      8      	    0.6
P622         	R. Betteni grp.     	      8      	    0.6
P630         	R. Brunnea grp.     	      8      	    0.6
120094       	Hexatoma sp.        	      8      	    0.6
102914       	Perlidae            	      8      	    0.6
P656         	R. Hyalinata grp.   	      8      	    0.6
102615       	V. cataractae       	      5      	    0.4
100666       	Ironodes sp.        	      5      	    0.4
115258       	Wormaldia sp.       	      5      	    0.4
114142       	Narpus sp.          	      5      	    0.4
115097       	Rhyacophila sp.     	      5      	    0.4
102840       	Leuctridae          	      3      	    0.2
101338       	Attenella sp.       	      3      	    0.2
116065       	N. occidentis       	      3      	    0.2
101226       	P. temporalis       	      3      	    0.2
121027       	Dicranota sp.       	      3      	    0.2
125392       	Maruina sp.         	      3      	    0.2
128341       	Diamesinae sp.      	      3      	    0.2
54512        	Polycelis coronata  	      3      	    0.2
84195        	Ostracoda           	      3      	    0.2
114205       	Zaitzevia sp.       	      3      	    0.2

sample #553

habitat typelocation no.sampler typesample area (m^2)
riffle 1 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
117159       	Glossosoma sp.      	   2643      	   26.5
116046       	Neophylax sp.       	   1400      	   14.0
100589       	R. robusta          	   1043      	   10.5
100557       	Cinygmula sp.       	    729      	    7.3
115453       	Hydropsyche sp.     	    600      	    6.0
116958       	Micrasema sp.       	    386      	    3.9
101187       	Paraleptophlebia sp.	    343      	    3.4
116794       	Lepidostoma sp.     	    329      	    3.3
114167       	Heterlimnius sp.    	    271      	    2.7
119656       	Antocha sp.         	    257      	    2.6
82754        	Acarina             	    229      	    2.3
101232       	Ephemerellidae      	    214      	    2.1
103202       	Chloroperlidae      	    171      	    1.7
100817       	B. tricaudatus      	    157      	    1.6
102594       	Z. cinctipes        	    157      	    1.6
101368       	D. doddsi           	    100      	    1.0
120094       	Hexatoma sp.        	     86      	    0.9
115155       	R. Sibirica grp. - n	     86      	    0.9
P630         	R. Brunnea grp.     	     86      	    0.9
102994       	Perlodidae          	     86      	    0.9
129228       	Chironominae sp.    	     71      	    0.7
102615       	V. cataractae       	     57      	    0.6
114197       	A. dispar           	     43      	    0.4
102986       	C. californica      	     43      	    0.4
127338       	Ceratopogoninae sp. 	     43      	    0.4
100996       	Ameletus sp.        	     29      	    0.3
121027       	Dicranota sp.       	     29      	    0.3
115097       	Rhyacophila sp.     	     29      	    0.3
68422        	Oligochaeta         	     29      	    0.3
115530       	A. grandis          	     29      	    0.3
114142       	Narpus sp.          	     29      	    0.3
128457       	Orthocladiinae sp.  	     28      	    0.3
54512        	Polycelis coronata  	     14      	    0.1
136377       	Oreogeton sp.       	     14      	    0.1
128341       	Diamesinae sp.      	     14      	    0.1
114205       	Zaitzevia sp.       	     14      	    0.1
101399       	S. tibialis         	     14      	    0.1
P656         	R. Hyalinata grp.   	     14      	    0.1
102643       	Capniidae           	     14      	    0.1
102840       	Leuctridae          	     14      	    0.1
102914       	Perlidae            	     14      	    0.1
101338       	Attenella sp.       	     14      	    0.1

sample #554

habitat typelocation no.sampler typesample area (m^2)
riffle 2 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
117159       	Glossosoma sp.      	     72      	   13.4
100589       	R. robusta          	     66      	   12.3
116046       	Neophylax sp.       	     52      	    9.7
100557       	Cinygmula sp.       	     48      	    8.9
115453       	Hydropsyche sp.     	     39      	    7.3
100817       	B. tricaudatus      	     34      	    6.3
103273       	Sweltsa grp.        	     25      	    4.7
114167       	Heterlimnius sp.    	     22      	    4.1
102594       	Z. cinctipes        	     21      	    3.9
116794       	Lepidostoma sp.     	     16      	    3.0
129228       	Chironominae sp.    	     16      	    3.0
68422        	Oligochaeta         	     15      	    2.8
101232       	Ephemerellidae      	     12      	    2.2
102986       	C. californica      	     11      	    2.0
116958       	Micrasema sp.       	     11      	    2.0
102914       	Perlidae            	     10      	    1.9
102615       	V. cataractae       	      8      	    1.5
101226       	P. temporalis       	      8      	    1.5
119656       	Antocha sp.         	      4      	    0.7
102994       	Perlodidae          	      4      	    0.7
82754        	Acarina             	      4      	    0.7
P622         	R. Betteni grp.     	      4      	    0.7
101368       	D. doddsi           	      3      	    0.6
102840       	Leuctridae          	      3      	    0.6
115155       	R. Sibirica grp. - n	      3      	    0.6
P630         	R. Brunnea grp.     	      3      	    0.6
115097       	Rhyacophila sp.     	      2      	    0.4
100635       	E. grandis          	      2      	    0.4
120094       	Hexatoma sp.        	      2      	    0.4
121027       	Dicranota sp.       	      2      	    0.4
102643       	Capniidae           	      2      	    0.4
100666       	Ironodes sp.        	      2      	    0.4
125392       	Maruina sp.         	      1      	    0.2
J977         	Z. Oregonensis grp. 	      1      	    0.2
54512        	Polycelis coronata  	      1      	    0.2
136377       	Oreogeton sp.       	      1      	    0.2
128341       	Diamesinae sp.      	      1      	    0.2
115530       	A. grandis          	      1      	    0.2
127338       	Ceratopogoninae sp. 	      1      	    0.2
114205       	Zaitzevia sp.       	      1      	    0.2
116025       	Ecclisomyia sp.     	      1      	    0.2
P656         	R. Hyalinata grp.   	      1      	    0.2
102485       	Pteronarcella sp.   	      1      	    0.2

sample #555

habitat typelocation no.sampler typesample area (m^2)
riffle 3 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100589       	R. robusta          	    142      	   15.5
115453       	Hydropsyche sp.     	    133      	   14.5
117159       	Glossosoma sp.      	    118      	   12.9
100817       	B. tricaudatus      	    100      	   10.9
100635       	E. grandis          	     88      	    9.6
103273       	Sweltsa grp.        	     53      	    5.8
114167       	Heterlimnius sp.    	     25      	    2.7
101368       	D. doddsi           	     23      	    2.5
129228       	Chironominae sp.    	     22      	    2.4
101232       	Ephemerellidae      	     18      	    2.0
116065       	N. occidentis       	     18      	    2.0
116934       	A. aspilus          	     17      	    1.9
100557       	Cinygmula sp.       	     17      	    1.9
102594       	Z. cinctipes        	     15      	    1.6
115258       	Wormaldia sp.       	     13      	    1.4
116794       	Lepidostoma sp.     	     12      	    1.3
102986       	C. californica      	     12      	    1.3
102615       	V. cataractae       	     12      	    1.3
P622         	R. Betteni grp.     	      7      	    0.8
103121       	Doroneuria sp.      	      5      	    0.5
103237       	Kathroperla perdita 	      5      	    0.5
P630         	R. Brunnea grp.     	      5      	    0.5
100666       	Ironodes sp.        	      5      	    0.5
128341       	Diamesinae sp.      	      5      	    0.5
128457       	Orthocladiinae sp.  	      4      	    0.4
68422        	Oligochaeta         	      3      	    0.3
J977         	Z. Oregonensis grp. 	      3      	    0.3
119656       	Antocha sp.         	      3      	    0.3
102994       	Perlodidae          	      3      	    0.3
120094       	Hexatoma sp.        	      3      	    0.3
121027       	Dicranota sp.       	      3      	    0.3
P656         	R. Hyalinata grp.   	      3      	    0.3
101187       	Paraleptophlebia sp.	      2      	    0.2
101347       	Caudatella sp.      	      2      	    0.2
102601       	Z. frigida          	      2      	    0.2
102910       	M. infuscata        	      2      	    0.2
103233       	Paraperla sp.       	      2      	    0.2
114205       	Zaitzevia sp.       	      2      	    0.2
115121       	R. Sibirica grp. - v	      2      	    0.2
115560       	P. elsis            	      2      	    0.2
82754        	Acarina             	      2      	    0.2
114142       	Narpus sp.          	      2      	    0.2

sample #556

habitat typelocation no.sampler typesample area (m^2)
riffle 4 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
117159       	Glossosoma sp.      	    552      	   50.2
100589       	R. robusta          	    178      	   16.2
115453       	Hydropsyche sp.     	     56      	    5.1
100817       	B. tricaudatus      	     44      	    4.0
116046       	Neophylax sp.       	     42      	    3.8
114167       	Heterlimnius sp.    	     34      	    3.1
103273       	Sweltsa grp.        	     30      	    2.7
100557       	Cinygmula sp.       	     26      	    2.4
116934       	A. aspilus          	     16      	    1.5
101232       	Ephemerellidae      	     14      	    1.3
102986       	C. californica      	     12      	    1.1
101368       	D. doddsi           	     10      	    0.9
82754        	Acarina             	      8      	    0.7
129228       	Chironominae sp.    	      8      	    0.7
116794       	Lepidostoma sp.     	      8      	    0.7
P622         	R. Betteni grp.     	      8      	    0.7
P630         	R. Brunnea grp.     	      6      	    0.5
P656         	R. Hyalinata grp.   	      6      	    0.5
102594       	Z. cinctipes        	      4      	    0.4
68422        	Oligochaeta         	      4      	    0.4
102994       	Perlodidae          	      4      	    0.4
103237       	Kathroperla perdita 	      4      	    0.4
120094       	Hexatoma sp.        	      4      	    0.4
102643       	Capniidae           	      2      	    0.2
102615       	V. cataractae       	      2      	    0.2
103110       	Megarcys sp.        	      2      	    0.2
103233       	Paraperla sp.       	      2      	    0.2
115155       	R. Sibirica grp. - n	      2      	    0.2
119656       	Antocha sp.         	      2      	    0.2
121027       	Dicranota sp.       	      2      	    0.2
128457       	Orthocladiinae sp.  	      2      	    0.2
54512        	Polycelis coronata  	      2      	    0.2
84195        	Ostracoda           	      2      	    0.2
114197       	A. dispar           	      2      	    0.2

Trapper Cr at Trapper Cr Wilderness

Habitat measurements and taxa metrics - August 16, 1993

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Visit comment

slippery instream substrate; some evidence of moderate bank erosion.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
11.710.7.157.4107

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle16.12.000.75 0.90.29 0.93 13.8 

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    2%28%70%   

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 0.76

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited98%48%0%

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited72711257

Taxa: tolerance

samp
type
loc
type
loc
no
commenttemp
pref
avg
(score)
TV3
richness
(count)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited 19171%50% 

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited5118%30%12%25%

Taxa: sample results (individuals-per-square-meter estimates)

2 samples: #552 (riffle composite), #551 (pool composite)

sample #552

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.75
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
568572       	A. insignificans    	    382      	   27.8
115273       	Chimarra sp.        	    158      	   11.5
103273       	Sweltsa grp.        	    150      	   10.9
103105       	S. curvata          	    105      	    7.6
101368       	D. doddsi           	     75      	    5.5
101399       	S. tibialis         	     75      	    5.5
P610         	R. Angelita grp.    	     45      	    3.3
100583       	R. hageni           	     45      	    3.3
102972       	H. pacifica         	     45      	    3.3
100557       	Cinygmula sp.       	     45      	    3.3
102611       	P. obscura          	     38      	    2.8
102884       	Perlomyia sp.       	     30      	    2.2
101226       	P. temporalis       	     22      	    1.6
103111       	M. signata          	     22      	    1.6
115098       	R. acropedes        	     15      	    1.1
102594       	Z. cinctipes        	     15      	    1.1
115530       	A. grandis          	     15      	    1.1
100637       	E. longimanus       	     15      	    1.1
82754        	Acarina             	     15      	    1.1
P772         	R. Vofixa grp.      	      8      	    0.6
102986       	C. californica      	      8      	    0.6
103237       	Kathroperla perdita 	      8      	    0.6
115454       	H. betteni          	      8      	    0.6
102561       	S. interrupta       	      8      	    0.6
115560       	P. elsis            	      8      	    0.6
68854        	Naididae            	      8      	    0.6
103123       	D. baumanni         	      8      	    0.6

sample #551

habitat typelocation no.sampler typesample area (m^2)
pool (composite sample) DKICK 0.75
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
127113       	Atrichopogon sp.    	    738      	   33.8
116025       	Ecclisomyia sp.     	    348      	   15.9
100817       	B. tricaudatus      	    318      	   14.6
114169       	H. corpulentus      	    294      	   13.5
103273       	Sweltsa grp.        	    144      	    6.6
103105       	S. curvata          	     84      	    3.8
101226       	P. temporalis       	     60      	    2.7
100557       	Cinygmula sp.       	     42      	    1.9
103237       	Kathroperla perdita 	     24      	    1.1
120094       	Hexatoma sp.        	     18      	    0.8
119660       	Antocha monticola   	     18      	    0.8
101318       	Timpanoga hecuba    	     12      	    0.5
103123       	D. baumanni         	     12      	    0.5
114165       	C. ornata           	     12      	    0.5
136377       	Oreogeton sp.       	      6      	    0.3
114197       	A. dispar           	      6      	    0.3
115454       	H. betteni          	      6      	    0.3
119037       	Tipula sp.          	      6      	    0.3
102986       	C. californica      	      6      	    0.3
102839       	D. occidentalis     	      6      	    0.3
121027       	Dicranota sp.       	      6      	    0.3
127778       	Bezzia sp.          	      6      	    0.3
131527       	Tabanus sp.         	      6      	    0.3
112314       	Oreodytes sp.       	      6      	    0.3

Download file containing all Ecology ambient stream biological monitoring data
Microsoft Access version 2000 format in ZIP archive, ~2 megabyte download

Questions or comments on content may be sent to George Onwumere
Questions or comments on presentation may be sent to Steve Barrett.

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