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Delta Fish and Amphibian Study 2000-2003_ DATA ...

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Site Date Time<br />

Channel Channel Riparian Vegetation Location Crown In-Stream<br />

Width Depth of Riparian Closure Vegetation<br />

(m) (m) Vegetation (%)<br />

79<br />

41B Street east ditch, ~200 meters south of River Road<br />

Tuesday, February 27, 2001 1010 1.3 0.3 thick grasses on both banks,<br />

some scirpus on the east side<br />

Thursday, May 17, 2001 830 1.3 0.3 thick grasses on both banks,<br />

some scirpus on the east side<br />

Thursday, August 23, 2001 805 1.5 0.5 thick grasses on both banks,<br />

some scirpus on the east side<br />

Y 0% some emergent grasses<br />

<strong>and</strong> potomogeton<br />

Y 0% some emergent grasses<br />

<strong>and</strong> potomogeton<br />

Y 10% some emergent grasses,<br />

potomogeton <strong>and</strong><br />

duckweed<br />

80<br />

Mason Canal, east side of 41B Street<br />

Tuesday, February 27, 2001 1000 5.0 1.0 grasses on both banks, some<br />

blackberry on the south bank,<br />

east of 41B<br />

Thursday, May 17, 2001 845 6.0 1.0 grasses on both banks, some<br />

blackberry on the south bank,<br />

east of 41B<br />

Thursday, August 23, 2001 830 9.0 2.0 grasses on both banks, some<br />

blackberry on the south bank,<br />

east of 41B<br />

Y 0% none<br />

Y 0% none<br />

Y 5% duckweed <strong>and</strong> water<br />

fern (Azolla) thick in<br />

places<br />

81<br />

33A Avenue north ditch, ~700 meters west of 41B Street<br />

Tuesday, February 27, 2001 1025 1.5 0.4 thick grasses, scirpus <strong>and</strong> Typha<br />

on both banks<br />

Thursday, May 17, 2001 855 1.5 0.4 thick grasses, scirpus <strong>and</strong> Typha<br />

on both banks<br />

Tuesday, August 21, 2001 1045 1.5 0.3 thick grasses, scirpus <strong>and</strong> Typha<br />

on both banks<br />

Y 0% Typha <strong>and</strong> scirpus<br />

Y 30% Typha, scirpus <strong>and</strong><br />

water-starwort<br />

Y 80% Typha, scirpus, waterstarwort<br />

<strong>and</strong> thick<br />

duckweed<br />

82<br />

34th Street east ditch, ~100 meters south of 31st Avenue<br />

Tuesday, February 27, 2001 1040 1.5 0.3 thick grasses on both banks Y 0% potomogeton<br />

Thursday, May 17, 2001 945 1.5 0.4 thick grasses on both banks Y 0% potomogeton<br />

Tuesday, August 21, 2001 1055 1.5 0.4 thick grasses on both banks Y 10% potomogeton <strong>and</strong><br />

filamentous algae<br />

Riparian Vegetation = plant species comprising riparian vegetation<br />

Crown Cover = % of wetted channel covered by vegetation<br />

In-Stream Vegetation = emergent <strong>and</strong> submergent plant species<br />

Location of Riparian Vegetation:<br />

Y= major growth located on critical west or south banks<br />

N= no vegetation or major growth located on east or north banks<br />

Wednesday, June 25, <strong>2003</strong> Page 20 of 27

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