WSP06216

• File Number: 8407.500
• Description: Platte River Basin - River Basin General Publications - Missouri River
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 5/1/1980
• Author: MRBC
• Title: Missouri River Basin Water Resources Management Plan - Part I - Chapters I-VI
• Water Supply Pro - Doc Type: Report/Study

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VI. "t) ItJ

TABLE 2-5
SUMMARY OF WATER TREATY, COMPACTS AND COURT DECREES
MISSOURI RIVER BAS IN

I

Affected Affected
Item States Subbasins
Treaties
International U.S, (Montana) Upper Missourt
Treaty and Great Brttain
(Canada)
Interstate Compacts
Belle Fourche South Dakota, Western Dakotas
River Compact Wyoming
Big Blue River Nebraska, Kansas
Compact Kansas
Republican River Colorado, Kansas
Compact Kansas,
Nebraska
South Platte Colorado, Platte-Niobrara
River Compact Nebraska
Yellowstone River Montana, North Yellowstone
Compact Dakota, Wyoming
Upper Niobrara Nebraska, Platte-Niobrara
River Compact Wyoming
Upper Colorado Arizona, Colorado, Piatte-Niobrara
River Compact New Mexico,
Utah, Wyoming
Colorado River Colorado, Platte-Niobrara
Compact Wyoming,
Arizona,
California,
Nevada, Utah,
New Mexico

I

I

I

I
I

Interstate Decrees
Laramie River

Wyoming vs, Platte-Niobrara
Colorado, 1922
(amended 1932,
1936, 1940, 1957)

I

I

North Platte
River

Platte-Niobrara

Nebraska vs,
Wyoming and
Colorado, 1945
(amended 1953)

I

Source: MBIAC Framework Study Report

I

I

General Principles

Apportions waters of St. Mary and Milk Rivers equally
between U,S. and Canada; major developments subject
to International Joint.Commission,

Established apportionment of direct diversion and
storage; limits construction and operation of dams
and reservoirs.

Apportionment of interstate flows of the Big Blue and
Little Blue Rivers and affected ground waters.

Allocates a given quantity, in acre-feet, for consumptive
use to each State based on average virgin supply,

Apportions the waters of this stream to the two States;
maintains stateline flow durtng specific pertods of time,

Allocates unused and unappropriated waters of four
trtbutartes for storage and direct diversions; affects
future construction and regulation,

Allocation of unused and unapproprtated waters for
storage and direct diversions; also affects ground water
for potential apportionment thereof.

Equitable division and apportionment of the use of water
of Upper Colorado River between the five upper basin
States, Transbasin diversions presently made to the
Missourt River Basin,

Apportions the waters of the Colorado River lKitween
the upper and lower basin States; transbasin diversions
presently made from the Colorado River Basin to the
Missourt River Basin,

Limits aggregate diversions in Colorado and those for
transbasin diversions; also post-July 31 diversions, and
Wyoming is entitled to remaining flow.

Limlls irrtgated acreage, total annual storage and
out-of-Basin diversions in Colorado; irrigated acreage,
total annual storage and apportionment of natural flow
with Nebraska in Wyoming, Provisions are made also
for use of Federal storage located in Wyoming on
Wyoming and Nebraska land under contracts.

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