TIGER LAKE -- KITSAP/MASON COUNTY: 1997

Tiger Lake is located 9.5 miles southwest of Bremerton. Most of the lake (102.8 acres) is in Mason County, and the northern tip of the lake (6.3 acres) is in Kitsap County. Tiger Lake has no surface inlets, and drains via Mission Creek to Hood Canal.

Size (acres)                         110
Maximum Depth (feet)                  40
Mean Depth (feet)                     19
Lake Volume (acre-feet)             2090
Drainage Area (square miles)        0.70
Altitude (feet)                      496
Shoreline Length (miles)             2.5

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
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STATION 1
97/06/02 20.0 68.0 Lt Green 0 Heavy Light 21.5 21.0
97/06/10 20.6 69.1 Lt Green 75 Mod Light 18.0 24.0
97/07/03 21.7 71.1 Lt Green 0 Light 18.0 26.0
97/07/16 23.3 73.9 Lt Green 25 Trace Light 17.0 27.0
97/08/15 25.6 78.1 Lt Green 100 Trace Calm 16.5 38.5
97/08/15 25.6 78.1 Lt Green 100 Trace Calm 16.5 38.5
97/08/28 23.3 73.9 Lt Green 10 Heavy Breezy 17.0 37.0
97/09/11 22.2 72.0 Lt Green 100 Light Light 14.0 40.5
97/09/23 24.4 75.9 Pea-green 0 None Calm 14.0 39.8
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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)
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STATION 1
97/06/02 E 4
97/06/02 H 8
97/09/16 E 6 0.24 2.7
STATION 2
97/06/02 E 4
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E=epilimnion composite, H=hypolimnion composite. Remarks codes: U = Below detection limits; J = Estimate.

SUMMARY OF VOLUNTEER SURVEY

WATER QUALITY-----------------------------------------------------------------------
Overall water quality was good. The worst problems were reported as:
1. shoreline erosion
Sources of actual or potential problems includes:
EXCESSIVE SHORELINE DEVELOPMENT AND CLEARCURRING HAS LED TO HIGH LEVELS OF
RUNOFF.
Were there days (and how many) when poor water quality impaired
Fishing - NO(0) Swimming - NO(0) Aesthetics - NO(0)
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?~ 105
Changes since last year? THERE IS A LARGE DEVELOPMENT IN A WET LAND AREA.

FIELD OBSERVATIONS OF ECOLOGY STAFF
6-2-97 No more jet skis allowed. Fishing has improved over the last year. The water
is really clear, a very light green color.

9-16-97 Stirrer is not working on the hydrolab

TROPHIC STATUS
Estimated Trophic State: Oligo-mesotrophic
Mean Trophic State Index (Secchi): 37 (Oligotrophic)
Mean Trophic State Index (Total Phosphorus): 31 (Oligotrophic)
Mean Trophic State Index (Chlorophyll a): 40 (Oligo-mesotrophic)

SUMMARY AND EXPLANATION OF TROPHIC STATE ASSESSMENT
With the exception of hypolimnetic DO, all indicators suggest an oligotrophic
assessment. The DO sag is interesting since the depletion is evident even in the
spring. This oddity supports an oligo-mesotrophic assessment.

COMMENTS FROM 96/09/09 AQUATIC PLANT SURVEY
cloudy, light breeze. Lots of water intake lines. Not many plants, much of bottom is
gravel with few low growing plants. P. epihydrous semi-thick between 1-2 m deep in
north end. A resident says there are many more plants now that there used to be.
Looked like good Lobelia habitat, but didn't see any. Maximum depth of plant growth:
4.0M.

AQUATIC PLANT LIST (This list may be from multiple years and sources.)
Isoetes sp. (quillwort) Juncus sp. or Eleocharis sp. (small grass-like
plants) Nuphar polysepala (spatter-dock, yellow water-lily) Nymphaea
odorata (fragrant waterlily) Polygonum amphibium (water smartweed)
Potamogeton amplifolius (large-leaf pondweed) Potamogeton epihydrus
(ribbonleaf pondweed) Potamogeton sp (thin leaved) (thin leaved pondweed)
Typha sp. (cat-tail) Utricularia sp. (bladderwort) unknown
plant (unknown)

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

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