WSP09812

• File Number: 8407
• Description: Platte River Basin - River Basin General Publications
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 9/1/1982
• Author: Corps of Engineers
• Title: Six State High Plains-Ogallala Aquifer Regional Resources Study - Appendixes Part I - A - B - and C
• Water Supply Pro - Doc Type: Report/Study

Desoto Bend NWR in Iowa and Nebraska, managed for wildlife
fisheries, waterfowl, and the bald eagle

Frost Wilderness Area, Myron Grove, Highline Landing, Burbank

Area, and Lake Yankton -- State Wildlife Areas in South Dakota

Bazile Creek (impact uncertain), Basswood Ridge, Middle Decatur

Bend, Cedar Creek Island, and the Plattsmouth Waterfowl Refuge -- State

Wildlife Areas in Nebraska

Snyder and Winnebago Bends -- State Wildlife Areas in Iowa

In spite of the minimum releases from Gavins Point for the mainte-

nance of water quality, adverse effects on water quality may also occur

in the Mlssou~i River downstream from Gavins Point Dam. Several water-

cooled steam-electric generating stations that use Missouri River water

for cooling are located along the Missouri River. Most of these plants

have "once through" cooling systems. Water returning to the river from

these plants may be 100 to 250 F warmer than ambient river water tempera-

tures. The greatest temperature differentials usually occur during the

winter months. With the proposed diversion, the thermal effluents from

these plants will be mixing with smaller volumes of river water and will

cause the plants to violate water quality thermal standards more fre-

quently. Such violations may be detrimental to all aquatic life in the

Missou~i River.

Federally listed endangered species that would be adversely

affected by flow depletions on the Missouri River include the bald

eagle. Other species listed as threatened or endangered by the States

of South Dakota, Nebraska, and Iowa include the interior least tern,

sturgeon chub, pallid sturgeon, longnose sucker, buff-breasted sandpiper,

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