7067

• UCREFRP Catalog Number: 7067
• Author: Banks, J. L.
• Title: Fish Species Distribution in Dinosaur National Monument During 1961 and 1962.
• USFW Year: 1964.
• USFW - Doc Type: Master's Thesis.
• Copyright Material: NO

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Chapter III
THE RIVER ENVIOONllENT
Numerous physiographio and hydrologioal charaoteristics ot
the river environment exerted important influences on the fishes within
the thesis area. Physioal and ohemical observations and measurements
were essential in gaining some understanding at tho effeot of these
faotors on the fish fauna and its distribution.

PhYsio!U"aphy
The Green River has its headwaters in theO'/ind River mountain
range in west-oentral WyoDIlng. l'!any tribl.1taries add to its volume as it
nows southward and into flaming Gorge on the border of northeastern
Utah and southwestern ~J'yoming. After entering Utah, the river turns
eastward through Brown's Park, Colorado, southl.J'ard into Dinosaur National
Monument, and penetrates into the steep \lalls of Lodore Canyon
(Figure 3). Upon reaching Echo Park, the river makes a sharp bend
around Steamboat Rook, then turns abruptly wa stward through ~fuirlpool
Canyon (Figure 4) and into Island. Park, Utah (Figure S). .ilier leaving
Island Park, the river flows southward through Split l-buntain Canyon,
and out into the relatively nat Uinta Basin.
The Ya.mpa River has its headwaters in the Park Range ot the
Roo~ MJuntains of northern Colorado and nows westward across the
state. The river enters Dinosaur national lDnument from the east, where
it is soon joined by the Little Snake River at Lily, Colorado. The