Otter Creek #2

July 23, 1998; 2:30 p.m.; Sunny, 75 F

Tests

Dissolved Oxygen8 mg/L
Nitrate.176 mg/L
pH6.5
TurbidityOver the Top
Velocity.083 m/sec
Temperature9.5 C

Habitat Assessment

DescriptionVery narrow, headwaters; surrounded by thick vegetation and forest upstream and downstream; crosses a walking trail.
Width.4 meters
Water AppearanceClear
Odornone
Attachment Sites 18/20Well-developed riffle and run; riffle is as wide as stream and length extends 2 times the width.
Embeddedness20/20Fine sediment surrounds and fills in 0-25% of the living spaces around and in between the gravel, cobble, and boulders.
Shelter For Fish17/20Snags, submerged logs, undercut banks, cobble and large rocks, or other stable habitat are found in over 50% of the site.
Channel Alteration20/20Stream straightening, dredging, artificial embankments, dams or bridge abutments absent or minimal; stream with meandering pattern.
Sediment Deposition20/20Little or no enlargement of islands or point bars and less than 5% of the bottom affected by sediment deposition.
Channel Flow Status20/20Water reaches bases of both lower banks and minimal amount of channel substrate is exposed.
Bank Vegetative ProtectionLEFT:10/10; RIGHT:10/10More than 90% of the streambank surfaces covered by natural vegetation, including trees, shrubs, or other plants; vegetative disruption, through grazing or mowing, minimal or not evident; almost all plants allowed to grow naturally.
Condition of BanksLEFT:10/10; RIGHT:10/10Banks stable; no evidence of erosion or bank failure; little potential for future problems.
Riparian Vegetative Zone WidthLEFT:10/10; RIGHT:10/10Width of Riparian Zone is greater than 50 feet; no evidence of human activities within the riparian zone.

Macroinvertebrate Count

order

Sample One

Sample Two

Sample Three

Total
Trichoptera4172950
Diptera1771034
Hirudinea0101
Hydracarina152017
Gastropoda0303
Oligochaeta0202
Coleoptera0202

TOTAL

363439109


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