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LELAND LAKE -- JEFFERSON COUNTY: 1997

Size (acres)                         107
Maximum Depth (feet)                  20
Mean Depth (feet)                     13
Lake Volume (acre-feet)             1391
Drainage Area (square miles)        5.71
Altitude (feet)                      190
Shoreline Length (miles)             2.8

Contour Map

Source of morphometric data: Water Supply Bulletins 42, 43, and 57.


VOLUNTEER-COLLECTED SECCHI DATA
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Date      Temperature      Water      %Cloud Recent        Secchi Lake  
(Y/M/D)    (C)   (F)  pH   Color      Cover  Rain   Wind   (ft)   Ht(in) Abbrev. Comments
________________________________________________________________________________________________________________________
        STATION 1
97/05/26  18.9  66.0  6.5  Black       100   Light          4.5    13.0  
97/06/15  21.7  71.1  6.5  Black       100   None   Calm    6.5    11.0  
97/07/02  20.0  68.0  6.5  Black        75   Light  Calm    7.0    16.0  
97/07/18  22.2  72.0  6.5  Black         0   None   Calm    7.5    16.0  
97/08/01  22.2  72.0  6.5  Black         0   None   Calm    8.5   270.0  
97/08/17  26.1  79.0  6.5  Black        10   None   Calm    8.5     9.5  
97/08/26                   Undefined   100   Trace  Calm    6.0     0.0  WATER WAS YELLOW-BROWN.
97/09/21  17.2  63.0  6.5  Grn-brown     0   None   Calm    3.0    11.0  DENSE ALGAE BLOOM.
97/10/05  16.7  62.1  6.5  Black        90   Heavy  Calm    5.0    14.0  
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LABORATORY RESULTS
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                    Total       Total                   Fecal Col. Bacteria  Turb-    Suspended Solids           
                    Phosphorus  Nitrogen   Chlorophyll  (colonies/100 mL)    idity    Total   Non-Volatile   Color  
Date         Strata (ug/L)      (mg/L)     (ug/L)       Site 1    Site 2     (NTU)    (mg/L)  (mg/L)         (Pt-Co)
________________________________________________________________________________________________________________________
        STATION 1
97/05/22       E      32                                                                                         
97/05/22       H      38                                                                                         
97/08/26       E      36        0.46       12.8                                                                  
97/08/26       H     336        1.16                                                                             
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E=epilimnion composite, H=hypolimnion composite.  Remarks codes: U = Below detection limits; J = Estimate.


SUMMARY OF VOLUNTEER SURVEY


There was no survey response for 1997.

FIELD OBSERVATIONS OF ECOLOGY STAFF
5-22-97  Gave the volunteer a view tube.  There was very high water over the winter.
Brazilian elodea was much worse this year.  An Aphanizomenon bloom observed.  

8-26-97  Slight H2S odor in the hypolimnion.  An osprey observed.

TROPHIC STATUS
Estimated Trophic State:                                 Eutrophic
Mean Trophic State Index (Secchi):                       51 (Meso-eutrophic)
Mean Trophic State Index (Total Phosphorus):             56 (Eutrophic)
Mean Trophic State Index (Chlorophyll a):                56 (Eutrophic)

SUMMARY AND EXPLANATION OF TROPHIC STATE ASSESSMENT
All TSI values, field observations and profile data support an eutrophic assessment.

COMMENTS FROM 98/09/03 AQUATIC PLANT SURVEY
Sunny, calm.  Visited to do vegetation survey for Dave Hallock.  Egeria still patchy in
main part of lake, though well distributed.  Also plentiful P. praelongus and P.
robbinsii.  Egeria not at surface in most of lake, though dense below surface at the
west end.  Maximum depth of plant growth:  3.0M. 

AQUATIC PLANT LIST  (This list may be from multiple years and sources.)Carex
sp. (sedge)  Ceratophyllum demersum (Coontail; hornwort)  Ceratophyllum
sp. (coontail)  Egeria densa (Brazilian elodea)  Eleocharis sp. 
(spike-rush)  Elodea canadensis (common elodea)  Equisetum sp. (horse
tail)  Iris pseudacorus (yellow flag)  Lysimachia nummularia (creeping
loosestrife)  Nitella sp. (stonewort)  Nuphar polysepala (spatter-dock,
yellow water-lily)  Nymphaea odorata (fragrant waterlily)  Phalaris
arundinacia (reed canarygrass)  Potamogeton amplifolius (large-leaf
pondweed)  Potamogeton epihydrus (ribbonleaf pondweed)  Potamogeton
praelongus (whitestem pondweed)  Potamogeton robbinsii (fern leaf pondweed)
Potamogeton sp (thin leaved) (thin leaved pondweed)  Potentilla
palustris (purple (marsh) cinquefoil)  Sagittaria sp. (arrowhead)  
Scirpus acutus (hardstem bulrush)  Scirpus sp. (bulrush)  Sparganium
angustifolium (narrowleaf bur-reed)  Sparganium sp. (bur-reed)  
Spirodela polyrhiza (great duckweed)  Typha sp. (cat-tail)  
Utricularia sp. (bladderwort)  Utricularia vulgaris (common bladderwort)
Wolffia sp. (water-meal)  Zizania aquatica (wild rice)  aquatic
Bryophyte (moss or liverwort)

Data collected and provided by Washington Department of Ecology's Lake Monitoring Program (Maggie Bell-McKinnon, phone 360-407-6124).

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