Otter Creek #1

July 21, 1998; 11:00 a.m.; Overcast, 85 F

Tests

Dissolved Oxygen8 mg/L
Nitrate.132 mg/L
pH7.5
Turbidity2 NTU
Velocity.313 m/sec
Temperature20 C

Habitat Assessment

DescriptionSurrounded by forested areas upstream and downstream; some trees have been blown into the creek upstream, water runs over rocks downstream.
Width8.5 meters
Water AppearanceClear
Odornone
Attachment Sites 20/20Well-developed riffle and run; riffle is as wide as stream and length extends 2 times the width.
Embeddedness19/20Fine sediment surrounds and fills in 0-25% of the living spaces around and in between the gravel, cobble, and boulders.
Shelter For Fish19/20Snags, submerged logs, undercut banks, cobble and large rocks, or other stable habitat are found in over 50% of the site.
Channel Alteration18/20Stream 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:9/10; RIGHT:9/10Banks 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
Trichoptera27312
Diptera26242777
Coleoptera0606
Odanta0111
Megaloptera1449
Ephemeroptera22132156
Plecoptera571527

TOTAL

566171188


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