8231

• UCREFRP Catalog Number: 8231
• Author: Maddux, H. R.
• Title: Draft Environmental Assessment For Procedures For Stocking Of Nonnative Fish Species In The Upper Colorado River Basin.
• USFW Year: 1996.
• USFW - Doc Type: Grand Junction, CO.
• Copyright Material: NO

Subsequent stockings of that species would then require case-by-case review
until the problem is addressed.
Instances when and where nonnative fishes can be stocked on a routine basis
(not requiring a case-by-case review) are presented in Table 3. Stocking of
nonnative fishes that are not managed or not prohibited in the Upper Basin at
the present time or are not included under routine stocking would require
evaluation on a case-by-case basis to ensure that the proposed stocking of
these fishes will not adversely affect the endangered fishes.
Table 3. Alternative 3 locations/situations where nonnative fish species can
be stocked on a routine basis.
A. Locations/situations where nonnative fish species can be stocked
on a routine basis:
All waters of the Upper Basin: salmonids (trout).
2. Isolated (no connection with the river system)
ponds/reservoirs that are within the 100-year floodplain of
river reaches upstream from critical habitat and that are
bermed to FEMA specifications five feet above the OHWL:
largemouth bass, black crappie, bluegill, channel catfish,
fathead minnow, mosquito fish, triploid grass carpe.
3. Lake Powell: striped bass, threadfin shad.
4. Any waters above Flaming Gorge: channel catfish,
mosquitofish, redside shiner, smallmouth bass.
5. Strawberry reservoir: smallmouth bass.
6. No other routine stocking within the 100-year floodplain
for river reaches designated as critical habitat or in
ponds/reservoirs connected to such river reaches.
F. ALTERNATIVE 4
This alternative includes provisions to allow stocking of largemouth bass,
bluegill, and black crappie in isolated ponds outside the 10-year floodplain
of critical habitat, in ponds that are bermed to FEMA standards to
artificially place them outside the 10-year floodplain of critical habitat.
and in connected waters that are adequately screened (both those above the
10-year floodplain and those bermed to FEMA standards for the 10-year
floodplain).
Under this alternative all standing waters located upstream of other standing
waters (lakes or reservoirs higher in the drainage than one other lake or
reservoir) could be stocked with any species already established in the
downstream standing water (for example, smallmouth bass in Strawberry
Reservoir because a reproducing population already exists downstream in
Starvation Reservoir, Utah).
Triploid grass carp include only those that have a certificate of genetic triploidy.
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