LOMA LAKE -- SNOHOMISH COUNTY: 1996

Lake Loma is located 6.5 miles northwest of Marysville. It has no surface inlets, and drains via an intermittent outlet to Crabapple Lake and Tulalip Bay. Lake Loma was formerly called Cranberry Lake.

Size (acres)                          21
Maximum Depth (feet)                  28
Mean Depth (feet)                     11
Lake Volume (acre-feet)              231
Drainage Area (square miles)        0.15
Altitude (feet)                      565
Shoreline Length (miles)             0.9

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 ________________________________________________________________________________________________________________________ There are no Secchi data available for 1996. ________________________________________________________________________________________________________________________
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 96/06/03 E 36 0.75 14.5 9 9 1.2 96/06/03 H 43 0.81 96/08/20 E 30 0.56 16.2 16 16 0.8 96/08/20 H 62 0.52 STATION 2 96/06/03 E 33 1.2 96/08/20 E 56 0.8 ________________________________________________________________________________________________________________________ E=epilimnion composite, H=hypolimnion composite. Remarks codes: U = Below detection limits; J = Estimate.
SUMMARY OF VOLUNTEER SURVEY There was no survey response for 1996. FIELD OBSERVATIONS OF ECOLOGY STAFF Shoreline heavily vegetated with Iris pseudacorus, Typha latifolia, and Nuphar lutea. There was a vast assortment of zooplankton observed during filtering (approx. 30 zooplankton/500ml).
TROPHIC STATUS Estimated Trophic State: Eutrophic Mean Trophic State Index (Secchi): 53N* (Eutrophic) Mean Trophic State Index (Total Phosphorus): 58 (Eutrophic) Mean Trophic State Index (Chlorophyll a): 57 (Eutrophic) *The calculated TSI is an estimate. The Secchi disk hit bottom (B), entered the weeds (W), or there were too few valid readings (N), or the calculation was based on qualified data (J), or TSIP was based on spring data (S).
SUMMARY AND EXPLANATION OF TROPHIC STATE ASSESSMENT Loma Lake is classified as eutrophic. All TSI values support this classification and the low hypolimnetic dissolved oxygen concentrations are indicative of a very eutrophic lake.
COMMENTS FROM 93/05/29 AQUATIC PLANT SURVEY Aquatic plants were surveyed at the public access and at one to three transects around the lake. A thorough survey was not made and the list below may be incomplete.
AQUATIC PLANT LIST (This list may be from multiple years and sources.)Iris pseudacorus (yellow flag) Myriophyllum hippuroides (western watermilfoil) Myriophyllum sp. (water-milfoil) Nuphar lutea (yellow water-lily) Typha sp. (cat-tail)


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

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