WSPC04299

• File Number: 8062.100
• Description: Federal Reserved Water Rights - Division 1
• State: 1
• Basin: Statewide
• Water Division: 1
• Date: 6/14/1989
• Author: Unknown
• Title: Water Information Management System Handbook - Chapter 30 - Procedure for Quantifying Channel Maintenance Flows
• Water Supply Pro - Doc Type: Report/Study

OtH67 '

31.1

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WATER INFORMATION MANAGEMENT SYSTEM HANDBOOK

3. Program A193 calculates log-Pearson type III statistics
and frequency distribution for high- and low-flow discharges for
each of the consecutive day periods mentioned in 2 above.

4. Program K609 (DVSUMR) produces a summary table of the
average daily mean discharges for the period of record.

5. Program J401 (PKWRCA) is used for annual peak flow
log-Pearson type III frequency analysis following Water
Resources Council guidelines in Bulletin 11-8. The output from
this program includes a listing by year of the annual peak flows
for the period of record, computed peak discharges at selected
exceedance probabilities with the corresponding 95 percent
confidence limits, and a plot of annual peak magnitudes vs.
annual exceedance probabilities.

6. Program E196 is used to retrieve selected data from the
streamflow/basin characteristics file. Specified character-
istics can be selected from a list of nearly 200 parameters
including drainage area, mean basin elevation, climatic
variables, and streamflow characteristics. .

1. Discharge Measurement Summary Form 9-201 contains a
listing of summary data associated with current-meter discharge
measurements taken at an individual gage station. Included on
Form 9-201 are date, water surface width, cross-sectional area
of flowing water, mean velocity, gage height, and discharge.
Copies of these forms will need to be requested since ~ost of
the summary data are not usually published or computerized.

3.1 - PLANNING

~ _ Annlications and Limitations. Apply the procedures in
Sections 32 through 34 to calculate the non-consumptive,
in-channel flow regimes necessary to maintain stream channels so
as to provide for maintenance of favorable conditions water
flows as required by the Organic Administration Act [Act of June
4, 1891 (16 U.S.C. 415)] (FSM 2501). The procedure can be used
to evaluate projects that have potential for diminishing the
range of frequent discharges that are responsible for forming
and maintaining the active channel. Examples of such projects
are as follows.

1. Streams diversion structures that alter natural flows.
2. Transmountain diversions (doner streams).
3. Reservoirs and their releases.
4. Hydroelectric projects.
5. Mining projects.

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*-FSH 4/89 AMEND 3-*