Beneficial Use of Non-

Fishes Removed from th

Reach of the Colorado 

“Proposed Experimental Rel

From Glen Canyon Dam a

Removal of Non-Native F

(USDOI, Sept. 2002)
subsection 2.2.2 “Mechanical Removal of Non-

Fish”. Subsection 2.2.2 reads as follows:A second key component of the Proposed Aassisting native fish through mechanical renon-native fish. Non-native fish removal is reducing adult rainbow and brown trout and non-native fish in the Colorado River near tconfluence of the Little Colorado River......The proposed disposal mechanism for nonwould be to transport the fish out of the GraCanyon. In response to concerns expres

tribes, a beneficial use would be soughtfor the fish thus removed.
‘Beneficial’ Use Opt

• Option 1. Live removal and restock

native fishes to other waters.

• Option 2. Removal of non-native f

fresh or frozen state for human con

• Option 3. Removal of non-native fi

for direct land application as agricfertilizer. 
‘Beneficial’ Use Opt

cont......

• Option 4. Removal of non-native fi

for fertilization of fish rearing ponHualapai Fish Hatchery.

• Option 5. Removal of non-native fi

for use as a fish emulsion.

• Option 6. Removal of non-native fi

for use as pet food or other animal supplement.
‘Beneficial’ Use Opt

cont......

• Option 7. In Situ disposal of non-na

biomass to recycle nutrient and enematerial in the Colorado River Eco

• Option 8. Land based disposal in a 
Live removal and restockin

native fishes.

• Potentially feasible based on log

• Helicopter and fish transport trucks• Holding facilities on river• USFWS assistance

• Substantial additional costs and p

issues

• $500,000 1st year, $420,000 2nd ye• Helicopter flights, presence on the riv

access
Removal of non-native fishes 

or frozen state for human con

•

Transport by helicopter(LCR) or 

Diamond Creek

•

Issues with USDA and FDA regu

•

No interest expressed by comme

fisheries vendors
Removal of non-native fish bio

land application as agricultura

on Native American Reserva

•

Concept of community garden plots for u

members to provide food

•

Relatively low cost alternative

•

Interest expressed by Hualapai Tribe

•

Existing native seed gardening underway

•

Possibilities for expansion

•

Arizona Cooperative Extension Service
Removal of non-native fish bio

fertilization of fish rearing pon

Hualapai Fish Hatcher

•

Fertilization of fish rearing pond

common hatchery practice

•

No interest in this option express

Hualapai

Tribe 
Removal of non-native fish 

for use as a fish emulsi

•

Commercial industry exists prov

emulsion as fertilizer for horticupurposes

•

Three commercial vendors conta

not interested in this option due tand logistics concerns
Removal of non-native fish bio

as pet food or other anim

supplement.

•

Fish and fish by-products com

as protein supplement in comm

•

Nestle Purina Inc. contacted re

option-no response received
In Situ disposal of non-native fi

recycle nutrient and energy m

Colorado River Ecosys

•

Original GCMRC proposal and b

alternative

•

Concerns over water quality, pre

species
Disposal of non-native species 

in a land fill. 

•

Secondary proposal by GCMRC in 

to stakeholder input

•

Tribal concerns over ‘wasting’ of li
Remaining Viable Op

•

Agricultural fertilizer use on rese

•

Live transport for restocking