StreamWatch Assessment Details at AssunCNW
General Information

Investigator #1 Eric Martin (The Watershed Institute)
Investigator #2 Erik Silldorff (The Watershed Institute)
Assessment Date May 22, 2024
Assessment Time 4:45 p.m.
Assessment Type(s) StreamWatch Schools

Weather Condition and Visual Assessment

Current Weather Sunny
Time Since Last Rain or Snowmelt More than 2 days ago
Water Color Brown
Water Odor Normal
Water Odor Other Description N/A
Turbidity Unknown
Water Movement Moderate/Ripples
Surface Coating None, Oil
Aquatic Vegetation Amount Moderate
Aquatic Vegetation Type Emergent, Submergent
Algae Amount Moderate
Algae Type Filamentous

Simple Habitat Assessment

Woody Debris Amount Abundant
Woody Debris Type Both
Tree Canopy Mostly Open (25-50%)
Land Use Characteristics Residential, Recreational, Natural

Chemical Assessment Measurement(s)

Air Temperature (°C) 29.0
Water Temperature (°C) 20.0
Nitrate Nitrogen (ppm) 0.001
Phosphates (ppm) 2.0
pH 7.0
Turbidity (JTU) 0.001
Dissolved Oxygen (ppm) 8.0
Salinity (ppt) 0.001


Macroinvertebrates


Plecoptera (Stoneflies) Unknown
Ephemeroptera (Mayflies) Unknown
Trichoptera (Non-net-spinning caddisflies) Unknown
Megaloptera (Dobsonflies, fishflies, and alderflies) Unknown
Elmidae (Riffle beetles larvae/adults) 1
Psephenidae (Water pennies) Unknown
Prosobranchia (Right-handed/gilled snails) Unknown
Athericidae (Aquatic snipe flies) Unknown
Zygoptera (Damselflies) 1
Anisoptera (Dragonflies) Unknown
Isopoda (Aquatic sow bugs) 1
Amphipoda (Scuds) 1
Tipulidae (Crane flies) Unknown
Bivalvia (Clams/mussels) 1
Decapoda (Crayfish) 1
Hydropsychidae (Net-spinning caddisflies) 1
Chironomidae (Midges) 1
Simuliidae (Black flies) 1
Turbellaria (planarians) 1
Hirudinea (leeches) Unknown
Archaeopulmonata (Left-handed/lunged snails) Unknown
Oligochaeta (Aquatic worms) 1
Syrphidae (Rat-tailed maggots) Unknown

- Female Spiny Creek Crayfish with berries/young larvae attached underneath - Young painted turtle (1-2") was found on shore near sample site - Lots of moss in samples

Site Photo(s)


General Comments and Site Observations

Samples were taken where the creek that runs through a park. The park is heavily utilized by residents and there are numerous residential properties in the area. There are industrial properties and a sewage treatment plant a short distance up the creek.