Washington state stream biological monitoring network

Lower Crab Cr at McManamon Rd

Habitat measurements and taxa metrics - August 11, 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

high flow (irrigation return flow); very few riffles (large substrate flooded).

Habitat: stream chemistry, temperature, and flow

temperature (deg C)	dis o winkler (mg/L)	stream flow (CFS)	pH (pH)	conductivity (umhos/cm)
22.6	8.4	90.9	8.4	288

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)
DKICK	riffle	1	9.6	1.50	0.75		2.2	0.50		0.09		10.8

Habitat: substrate

loc no	other	wood	silt clay	sand	fine gravel	coarse gravel	cobble	boulder	bedrock rough	bedrock smooth
1					20%	10%	70%

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is not yet available for sites in Washington east of the Cascades.

Taxa: composition

samp type	loc type	loc no	comment	EPT (%)	ephem (%)	chiron (%)
DKICK	riffle	0	field composited	73%	13% (1)	0%

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

Taxa: richness

samp type	loc type	loc no	comment	Trichop richness (count)	total richness (count)	Plecop richness (count)	EPT richness (count)	Ephem richness (count)
DKICK	riffle	0	field composited	3 (1)	15 (1)	0% (1)	6	3 (1)

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

Taxa: tolerance

samp type	loc type	loc no	comment	temp pref avg (score)	TV3 richness (count)	HBI (score)	BiTol richness (count)	tv7 (%)	top3 (%)	BiTol (%)
DKICK	riffle	0	field composited		1	6 (1)	0%	22%	71% (1)	20%

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

Taxa: trophic/habit

samp type	loc type	loc no	comment	sv richness (count)	clinger richness (count)	scrapers (%)	predators (%)	filterers (%)	clingers (%)
DKICK	riffle	0	field composited	3 (1)	4	3%	14%	67% (1)	68%

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

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

2 samples: #541 (riffle composite), #540 (pool composite)

sample #541

habitat type	location no.	sampler type	sample area (m^2)
riffle	(composite sample)	DKICK	0.75

taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
115454       	H. betteni          	   1300      	   37.6
115408       	Cheumatopsyche sp.  	    740      	   21.4
127113       	Atrichopogon sp.    	    430      	   12.4
100817       	B. tricaudatus      	    430      	   12.4
126774       	Simulium sp.        	    270      	    7.8
114095       	Stenelmis sp.       	     80      	    2.3
114180       	O. quadrimaculatus  	     50      	    1.4
136327       	Hemerodromia        	     40      	    1.2
117682       	Petrophila sp.      	     30      	    0.9
82754        	Acarina             	     20      	    0.6
115221       	Protoptila sp.      	     20      	    0.6
101413       	T. minutus          	     20      	    0.6
568572       	A. insignificans    	     10      	    0.3
118831       	Diptera             	     10      	    0.3
114146       	Microcylloepus sp.  	     10      	    0.3

sample #540

habitat type	location no.	sampler type	sample area (m^2)
pool	(composite sample)	DKICK	0.75

taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
127113       	Atrichopogon sp.    	   1210      	   41.2
115454       	H. betteni          	    930      	   31.6
115408       	Cheumatopsyche sp.  	    570      	   19.4
100817       	B. tricaudatus      	     70      	    2.4
114095       	Stenelmis sp.       	     40      	    1.4
101413       	T. minutus          	     40      	    1.4
568572       	A. insignificans    	     20      	    0.7
116651       	Nectopsyche sp.     	     20      	    0.7
79119        	Pelecypoda          	     10      	    0.3
136327       	Hemerodromia        	     10      	    0.3
114180       	O. quadrimaculatus  	     10      	    0.3
102139       	Argia sp.           	     10      	    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.

Washington State Department of Ecology