7079

• UCREFRP Catalog Number: 7079
• Author: Carlson, C. A., et. al.
• Title: Fishes and Macroinvertebrates of the White and Yampa Rivers, Colorado
• USFW Year: 1979.
• USFW - Doc Type: Final Report on a Baseline Survey Conducted for the Bureau of Land Management.
• Copyright Material: NO

is a smaller waterway (average annual discharge = 420,000 acre feet) with
headwaters on the White River Plateau. It flows west for approximately 140
km and joins the Green River near Duchesne, Utah. Both rivers are major
tributaries of the Colorado River and are presently unaffected by major
impoundments.
Fish sampling stations
Six major stations for fish collection were established on the Yampa
and White Rivers in the summer of 1975. Additional stations were subsequently
established for reasons mentioned below.
Four original Yampa River stations (Y-1 through Y-4) were located
between Hayden, Colorado, and Lily Park Pool west of Cross Mountain Canyon
(Figure 1, Table 6). More detailed station descriptions were presented by
Prewitt (1977). Two additions to the original Yampa River stations were
Stations Y-4a and Y-2j (Figure 1, Table 6). Station Y-4a was established late
in 1974 and was sampled occasionally thereafter; it was located at the base
of Cross Mountain Canyon and contained unique deep-water canyon habitat, In
1977, access to Station Y-2 was fenced; an alternative sampling site was
established near Juniper Hot Springs, Colorado, and designated Station Y-2J
(Figure 1, Table 6). Because the environment at and collections from Station
Y-2J were significantly different from those of Station Y-2, Y-2J was
considered a new station rather than a substitute for Y-2.
A canoe trip was made on August 16-18, 1977, and fishes were col-
lected by seine and dipnet at six additional stations (Y-2a through Y-2f) on
the Yampa River between Craig and Juniper Springs Canyon (Figure 2).
Two permanent fish sampling stations on the White River (W-A and
W-B) were established in 1975 (Figure 1, Table 6). More detailed descriptions
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