PERMFILE48898

• Permit No: C1981044
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Appendix page 1 through A-2
• Section_Exhibit Name: EXHIBIT 15 FISH SURVEY OF THE WILLIAMS FORK RIVER
• Media Type: D
• Archive: No

TABLE 4
• DENSITIES (N0./FT2) AND PERCENT RELATIVE ABUNDANCES OF BENTHIC
MACROINVERTEBRATES COLLECTED BY SURBER SAtIPLER AT
STATION 3, WILLIAMS FORK RIVER, MOFFAT
COUNTY, COLORADO, SEPTEMBER 12, 1979
Taxa Rep 1 Rep 2 Rep 3 Rep 4 X xRA
Turbellaria (Flatworms)
Unidentified Planariidae S -- -- -- 1.2 0.4
Ephermeropteza (Mayflies)
Baetis spp. 138 48 91 21 74.5 24.9
Ephemerella sp. S -- 1 2 2.0 0.7
HeptaAeaia sp. 15 7 16 5 10.8 3.6
Paralepcophlebia sp. -- 4 -- 1 1.2 0.4
RithroRena sp. 1 10 2 5 4.5 1.5
Traverella sp. 3 -- -- -- 0.8 0.3
Tricorythodes sp. 3 -- 2 2 1.7 0.6
• TOTAL 165 69 112 36 95.3 32.0
Odonata (Dragonflies; damselflies)
Immature Gomphidae -- 1 -- -- 0.3 0.1
Plecopteca (Stoneflies)
Claassenia sabulosa 2 -- -- -- 0.5 0.2
Isogenoides sp. 4 2 7 4 4.2 1.4
Immature Chloroperlidae 2 -- -- -- 0.5 0.2
TOTAL 8 2 7 4 5.2 1.8
Hemiptera (True bugs)
Ambrysus sp. -- 2 -- -- 0.5 0.5
Trichoptera (Caddisflies)
Brachycentrus sp. 6 1 1 2 2.5 0.8
Cheumatopsyche sp. 85 2 24 27 34.5 11.6
Helicopsyche sp. -- 6 -- -- 1.5 0.5
Hydropsyche sp. A 26 23 57 7 28.3 9.5
Hydropsyche sp. B 90 68 110 19 71.7 24.0
TOTAL .207 100 192 55 138.5 46.4
Coleoptera (Aquatic beetles)
Cleptelmis sp. 3 -- -- -- 0.8 0.3'
Dubiraphia sp. -- 1 -- -- 0.3 0.1
• Stenelmis sp. (larvae)
Stenelmis sp. (adults) 30
26 3
1 5
2 1
1 9.7
7.5 3.2
2.5
TOTAL 59 S 7 2 18.3 6.1
18