PHILLIPS LAKE -- MASON COUNTY: 1997

Phillips Lake is located seven miles north of Shelton. It has no surface inlets, and drains via Campbell Creek through a marshy area to Oakland Bay.

Size (acres)                         110
Maximum Depth (feet)                  25
Mean Depth (feet)                     16
Lake Volume (acre-feet)             1760
Drainage Area (square miles)        0.50
Altitude (feet)                      188
Shoreline Length (miles)             2.6

Contour Map

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


VOLUNTEER-COLLECTED SECCHI DATA ________________________________________________________________________________________________________________________ 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 19.4 66.9 Lt Green 50 Trace Calm 16.0 8.0 97/06/18 19.4 66.9 6.5 Lt Green 25 Mod Breezy 15.0 8.0 97/07/02 21.1 70.0 6.5 Lt Green 50 Trace Light 15.5 9.0 97/07/17 21.7 71.1 6.5 Lt Green 25 Trace Breezy 16.0 10.0 97/08/07 23.3 73.9 6.5 Lt Green 10 None Light 15.0 12.0 97/08/18 23.3 73.9 6.5 Lt Green 75 None Breezy 14.0 0.0 97/09/01 22.2 72.0 6.5 Lt Green 25 Light Light 12.0 1.5 ________________________________________________________________________________________________________________________
LABORATORY RESULTS ________________________________________________________________________________________________________________________ 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 97/05/26 E 8 0.17 97/09/01 E 8 0.19 2.9 STATION 2 97/05/26 E 8 0.17 ________________________________________________________________________________________________________________________ E=epilimnion composite, H=hypolimnion composite. Remarks codes: U = Below detection limits; J = Estimate.
SUMMARY OF VOLUNTEER SURVEY WATER QUALITY----------------------------------------------------------------------- Overall water quality was fair. The worst problems were reported as: 1. algae 2. algae 3. declining long-term trend Sources of actual or potential problems includes: INCREASED LOGGING AND DEVELOPMENT AND OUTDATED SEPTIC SYSTEMS Were there days (and how many) when poor water quality impaired Fishing - YES(60) Swimming - YES(60) Aesthetics - YES(60) MANAGEMENT-------------------------------------------------------------------------- Did the lake receive chemical treatments this year? NO Were fish stocked this year? YES Any lake groups present (such as a lake association)? YES Any lake management activities this year? NO OTHER------------------------------------------------------------------------------- How many homes/new homes are there on the lake shore? 162 Changes since last year? SEVERAL LOTS CLEARED AND DEVELOPED.
FIELD OBSERVATIONS OF ECOLOGY STAFF 5-26-97 Gaylord Kidney wants to do plant surveys. Very few zooplankton observed in the samples. 9-1-97 Lots of boaters which made it difficult to sample
TROPHIC STATUS Estimated Trophic State: Oligo-mesotrophic Mean Trophic State Index (Secchi): 38 (Oligo-mesotrophic) Mean Trophic State Index (Total Phosphorus): 33 (Oligotrophic) Mean Trophic State Index (Chlorophyll a): 41 (Oligo-mesotrophic)
SUMMARY AND EXPLANATION OF TROPHIC STATE ASSESSMENT Although nearly all the data collected from Lake Phillips might suggest an oligotrophic lake, there was a significant blue-green algal bloom on the lake this year which is not typical of oligotrophy, therefore, the lake is assessed as oligo-mesotrophic.
COMMENTS FROM 98/07/20 AQUATIC PLANT SURVEY Sunny, light breeze. Shoreline is developed, many bulkheads but also many trees left standing, and many down and submersed. Aquatic plant community sparse and low growing. Much epiphytic algae on substrate and plants in NE end. Observed rough-skinned newts, bullfrog, many small fish. Conducted habitat survey for Kirk Smith. Maximum depth of plant growth: 6.0M.
AQUATIC PLANT LIST (This list may be from multiple years and sources.) Dulichium arundinaceum (Dulichium) Elodea canadensis (common elodea) Iris pseudacorus (yellow flag) Isoetes sp. (quillwort) Juncus sp. (rush) Juncus sp. or Eleocharis sp. (small grass-like plants) Najas flexilis (common naiad) Nitella sp. (stonewort) Potamogeton pusillus (slender pondweed) Utricularia sp. (bladderwort)


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

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