8138

• UCREFRP Catalog Number: 8138
• Author: Utah Division of Wildlife Resources, Arizona Game and Fish Department and The National Park Service.
• Title: Glen Canyon National Recreation Area Utah/Arizona\
• USFW Year: 1996.
• Copyright Material: NO

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g. Maintain spawning habitat.
h. Maintain estimated population of Age II and older fish at or above
100,000 fish.
i. Growth rates such that Age III rainbow trout achieve 18" in length,
and relative weight of at least 0.80.
j. Protect existing population of flannelmouth sucker.
k. Protect spawning location at Paria confluence.
1. Study habitat needs and movement of flannelmouth suckers.
m-. Determine factors limiting recruitment of young flannelmouth
suckers.
n. Determine the effects of dam operations on native and nonnative
fish.
E. PERENNIAL/INTERMITTENT STREAMS
1. Status of Fisheries in Streams: Most streams in side canyons have not had
surveys conducted to determine the status of fisheries. Streams connected
with Lake Powell (below full pool elevation of 3700) are subject to periodic
inundation and potential invasion by all species present in the reservoir.
Management efforts stated in this section will focus on streams above Lake
Powell full pool elevation, particularly emphasizing streams isolated from the
lake.
2. Stream Goal: Protect and preserve native species and habitats in streams
and isolated springs.
3. Stream Management Objectives
a. Protect water quality, water sources, and instream flows in streams
and isolated aquatic habitats.
b. Maintain native assemblages in streams.
c. Understand and protect unique isolated aquatic ecosystems within
61en Canyon NRA.
d. Conduct aquatic inventories of perennial streams.
e. Prevent introduction of nonnatives in streams.
f. Develop a stream survey plan.
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