WSP12495

• File Number: 8221.109
• Description: Colorado River Basin Projects - Long Hollow
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 9/1/2003
• Author: Wright Water Engineers - Ecosphere
• Title: Long Hollow Reservoir - Feasibility Study-Biological Assessment and Addendum
• Water Supply Pro - Doc Type: Publication

I
I
I
I
I
I
I
I
J
I

001501

10.0 BIOLOGICAL ENVIRON MENT ............. .... .............. ................ ...... ...................... ......... 24
10.1 Vegetation Communities ............ ........ ................ ...... .................. ... ........... ........ ........... .......24

10.2 Wetlands ...... ..... .................. ..... ...... ............ ..... ............ ........... '" ............. ............................26

10.3 Wildlife............................................................................................................................. ..26

10.4 Fisheries .... ..................................................... ....... ....... ...... ........... ........ ...... ... ......... ..........29

10.5 Macroinvertebrates ....... ..... ......... ......... ............ .... ....... ..... .......... '" ........ .... ............. ..... .......30

11.0 T &E SP ECI ES ...................................... .... ............ .................... ..... ............................... 30

11.1 Federally Listed Species Considered and Evaluated ........................................................30
.11.2 Sensitive Species ........... .......................... ....... ........ ........... .... ........... ............. .......... .........31
11 .3 Species Assessments.. ........... ...................................................................................... ..... 31
11.3.1 Colorado Pikeminnow (Pfychocheilus lucius) ...................................................32
11.3.2 Razorback Sucker (Xyrauchen texanus) ..........................................................37
11.3.3 Bald Eagle (Haliaeetus leucocephalus) .............................................................41
11.3.4 Southwestern Willow Flycatcher (Empidonax trail/ii extimus) ...........................46
11.3.5 Gunnison Sage Grouse (Centrocercus minimus) .............................................52
11.3.6 Yellow-Billed Cuckoo (Coccyzus Americanus) ..................................................56
11.3.7 Roundtail Chub (Gila robustus) .......... ........... ........................... ........... .......... .....59
11.3.8 Flannelmouth Sucker (Catostomus latiPinniS)....................................................62
11 .4 Summary of Conclusions................................................................................................... 65

12.0 LITERATURE CITED... .................. ......... ....... ....... ...................... ..... .......... ..... .............. 66

ii