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Lake Martha is located 10.5 miles northwest of Marysville, and one mile east of Warm Beach. It is fed by Lake Howard and drains to Port Susan. (There is another Lake Martha, known as Martha Lake, located near Alderwood Manor.)
Size (acres) 62 Maximum Depth (feet) 70 Mean Depth (feet) 33 Lake Volume (acre-feet) 2046 Drainage Area (square miles) 1.63 Altitude (feet) 186 Shoreline Length (miles) 1.8
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 97/05/24 19.4 66.9 Black 0 Mod Light 15.0 29.0 LAKE LOOKS QUITE CLEAR. IRIS IN BLOOM. TROUT PLANTED 2 WEEKS AGO.1 NEW LARGE BULKHEAD ON THE LAKE. GEESE 30+. BIRD SCARE TAPE EVERYWHERE. 97/06/02 20.0 68.0 Black 0 Light Calm 14.0 28.0 lots of small particulate - unknown shore weed. muskrat color : more golden amber 97/06/12 21.1 70.0 Black 90 Heavy Calm 14.0 29.5 lots of varying sized particulate 97/06/25 20.6 69.1 Undefined 90 Mod Breezy 14.0 29.0 WATER LOOKS DARK. PIED BILLED GREBE WITH FOUR CHICKS. WINDY FOR TWO DAYS. WATER COLOR WAS PALE GOLD. 97/07/10 21.1 70.0 Undefined 6 Heavy Calm 12.0 0.0 COLOR - PEA SOUP YELLOW, WATER MURKY LOOKING. NO MORE LARGE LEAVED PIND WEED. NEIGHBOR REPORTS ORANGE-RED ALGAE IN COVE YESTERDAY. LOON CALLING 97/07/25 23.3 73.9 Undefined 0 None Light 16.5 32.8 WATER COLOR WAS LIGHT GOLD. WATER WAS QUITE CLEAR WITH VERY FINE PARTICULATE MATTER. 97/08/09 23.9 75.0 Undefined 0 None Breezy 16.0 35.0 WATER COLOR WAS LIGHT GOLD. WATER LOOKS VERY CLEAR. ONLY SMALL PARTICLES. 97/08/23 23.9 75.0 Undefined 0 None Light 16.0 37.5 WATER WAS LIME GOLD. LOOKS SAME AS LAST TIME. TWO PATCHES OF PURPLE LOOSESTRIFE. 97/09/04 22.0 71.6 6.5 Undefined 0 None Calm 16.5 0.0 WATER COLOR WAS LIGHT GOLD. 97/09/21 18.0 64.4 6.5 Undefined 0 None Calm 14.8 39.0 WATER WAS GREEN-GOLD. LOTS OF FLOATING PARTICLES. 97/10/07 15.0 59.0 6.3 Undefined 0 Trace Calm 14.5 39.0 WATER WAS GOLD. LOTS OF PARTICULATES. ________________________________________________________________________________________________________________________
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 97/06/12 E 13 0.42J 97/06/12 H 14 0.65J 97/09/04 E 10 0.33 3.0 97/09/04 H 14 0.66 ________________________________________________________________________________________________________________________ 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. high water levels 2. declining long-term trend 3. algae Sources of actual or potential problems includes: Too many lawns, burning adj to lake, old septic tanks, people removing shoreline vegatation. 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?~ 74 Changes since last year? 1 new bulkhead
FIELD OBSERVATIONS OF ECOLOGY STAFF 6-12-97 Very few zooplankton observed in the water samples. A bald eagle was observed during sampling. Water level was very high. Very few algal cells observed in the water samples. 9-4-97 Spherical blue-green algae observed.
TROPHIC STATUS Estimated Trophic State: Oligo-mesotrophic Mean Trophic State Index (Secchi): 38 (Oligo-mesotrophic) Mean Trophic State Index (Total Phosphorus): 37 (Oligotrophic) Mean Trophic State Index (Chlorophyll a): 41 (Oligo-mesotrophic)
SUMMARY AND EXPLANATION OF TROPHIC STATE ASSESSMENT Lake Martha is a small, clean and relatively clear lake. All field observations and TSI values support an oligo-mesotrophic assessment.
AQUATIC PLANT LIST (This list may be from multiple years and sources.) Elodea sp. (waterweed) Nymphaea odorata (fragrant waterlily)
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