WSP05690

• File Number: 8407
• Description: Platte River Basin - River Basin General Publications
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 1/1/1978
• Author: Toups Corp
• Title: Water Resources Investigation in the South Platte River Valley - Reach Number 2
• Water Supply Pro - Doc Type: Report/Study

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Ce~tain ditches possess a right to river flow in quantities

which in effect results in diversion of all available flow from

the main-stem channel. Downstream diverters rely on storage

releases and accretions which regenerate river flow as a supply

so~rce. A significant component of supply to the river in reaches

downstream from the canyon mouth during the irrigation season is

pr9vided by tributary discharges, canal waste, and agricultural

returns. These accretions may be discharged to the river through

natural drainage channels, through point source facilities such

as municipal outfalls and tile drains, or through channel seepage.

Diversion priorities of many downstream ditches are satisfied

whQlly or partially by such sources. Overland return flow to

ri~er systems is usually negligible due to the presence of the

buffer zone flood plain.

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Daily flows purveyed through the system are itemized in

of.identity of diverter or storer and source of water.

may be attributed to:

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Direct flow in the river;

Reservoir storage releases;

C-BT Project water;

Exchange water.

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Exchange water does not represent an additional supply source;

rather, it depicts water manipulated by a management agreement.

Flows involved in im exchange are diverted for use from the system.

An :equivalent volume of replenishment or "make-up" water is introduc~d

to :the system at a concurrent or subsequent time from an alternate

source. Satisfaction of diversion priorities is often accomplished

by ~ooperative plans of management and exchange of water. Release

of water from storage represents an important feature of such

operations. The exchange arrangements provide great system flexibility.

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