PROJ00424

• Contract/PO #: C153472
• Contractor Name: San Miguel Water Conservancy District
• Water District: 0
• County: San Miguel
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Contract Documents

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INTERIM WORK EFFORTS

TASK El.0

FLOW MEASUREMENT PROGRAM

Pumose:

Develop and initiate a /low measurement program on the Gurley and Cone intake systems and

the LiIylands distribution canal with the objective of estimating maximum ditch capacities.

Methodolol!V: A combined program of current metering and stage recording will be undertaken to obtain

data to be used for estimating the maximum capacity of the Gurley and Cone Intake Ditches,

A program of current metering will be undertaken to obtain data to be used for estimating the

maximum capacity of the Lilylands Canal at two locations. Boyle, in consultation with the

CWCB, will develop these programs, The CWCB and local entities will supply the equipment

necessary to make the measurements. Boyle personnel will make one trip to the field to

initiate the program. All other data collection efforts will be handled by CWCB and ditch

company personnel

Because the 1988 runoff season is anticipated to produce lower then normal/lows, estimation

of maximum ditch capacities will require heavy reliance on hydraulic calculations. M .nn;n~

Equation, without consideration of backwater effects, in conjunction with measured cross,

section geometIy. /low, and corresponding depth of /low data will be used to estimate

maximum ditch capacities at the selected locations.

The capacity of the Gurley and Cone Intake Ditches immediately upstream of the reservoirs

will be estimated by installation of a staff gage on each ditch and the development of discharge

rating curves for these sections. The cross section geometIy at each staff gage will be

measured using a tripod mounted leve~ surveyors rod, and cloth tape, The discharge rating

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