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Sunday Lake is located five miles east of Stanwood. It drains southeast to the lower Stillaguamish River via Jackson Gulch. It has a marshy shoreline. Sunday Lake was monitored by Ecology staff only
Size (acres) 46 Maximum Depth (feet) 20 Mean Depth (feet) 8 Lake Volume (acre-feet) 368 Drainage Area (square miles) 1.67 Altitude (feet) 211 Shoreline Length (miles) 1.4
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 1994. ________________________________________________________________________________________________________________________
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 94/05/19 E 127 1.41 120 94/05/19 H 124 0.57 94/08/19 E 33 0.60J 2.6J 94/08/19 H 57 0.62J ________________________________________________________________________________________________________________________ E=epilimnion composite, H=hypolimnion composite. Remarks codes: U = Below detection limits; J = Estimate.
SUMMARY OF VOLUNTEER SURVEY There was no survey response for 1994. FIELD OBSERVATIONS OF ECOLOGY STAFF There were no field observations recorded for SUNDAY (SNOHOMISH) in 1994
TROPHIC STATUS Estimated Trophic State: Not Available Mean Trophic State Index (Secchi): 0 (Not assessed) Mean Trophic State Index (Total Phosphorus): 55 (Eutrophic) Mean Trophic State Index (Chlorophyll a): 71J* (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 No summary analysis was performed for SUNDAY (SNOHOMISH) in 1994
COMMENTS FROM 93/05/25 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.) Ceratophyllum demersum (Coontail; hornwort) Chara sp. (muskwort) Elodea canadensis (common elodea) Elodea sp. (waterweed) Isoetes sp. (quillwort) Nuphar lutea (yellow water-lily) Potamogeton amplifolius (large-leaf pondweed) Scirpus sp. (bulrush) Typha sp. (cat-tail)
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