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 3
( DENSITIES (N0./FT2) AND PERCENT RELATIVE ABUNDANCES OF BENTHIC
lL4CROINVERTEBRATES COLLE CTED BY SURBER SAMPLER AT
STATION 2, WILLIAM5 FORK RIVER, MOFFAT
COUNTY, COLORADO, SEPTEMBER 12, 1979

i Taxa Rep 1 Rep 2 Rep 3 Rep 4 X XRA
Annelida
Unidentified Naididae -- -- 1 -- 0.3 0.1
Ephemeroptera (Mayflies)
Baetis spp. 25 18 70 22 33.7 9.7
Ephemerella sp. -- 1 2 -- 0.8 0.2
E hp oron sp. -- -- -- 2 0.5 0.1
Heptagenia sp. 7 6 4 8 6.2 1.8
Paralevtophlebia sp. 5 5 8 2 5.0 1.4
RithroRena sp. 22 26 30 21 24.8 7.2
Traverella so. -- 3 -- 3 1.5 0.4
• Tricarythodes so. -- -- 3 1 1.0 0.3
TOT_aL 59 59 117 59 73.5 21.1
Odonata (Dragonflies; damselflies)
Ophio~omphus sp. 1 -- -- -- 0.3 0.1
Plecoptera (Stoneflies)
Claassenia sabulosa 1 -- -- 1 0.5 0.1
Isogeniodes sp. -- -- 1 2 0.8 0.2
TOTAL 1 -- 1 3 1.3 0.3
Trichoptera (Caddisflies)
Brachycentrus sp. 6 6 2 2 4.0 1.2
Cheumatoosvche sp. 55 44 75 23 50.5 14.6
Helicopsyche sp. 12 2 2 3 4.7 1.4
~dropsvche sp. A 17 17 42 43 29.8 8.6
Hydropsyche sp. B 160 193 98 128 144.7 41.8
TOTAL 250 262 219 204 233.7 67.6
Coleoptera (Aquatic beetles)
Cleptelmis sp. -- -- 1 -- 0.3 0.1
Stenelmis sp. (larvae) 4 2 1 2 2.2 0.6
Stenelmis sp. (adults) 4 1 2 -- 1.8 0.5
TOTAL 8 3 4 2 4.3 1.2
Diptera (True flies)

Ablabesmyia sp.
3 --
1
1
1.2
0.3
Atherix varieRata 4 9 1 3 4.3 1.2
`- Cricotoous sp. 13 8 8 30 14.1 4.2
Eukiefferiella sp. 7 3 9 2 5.3 1.5
16