WSP00313

• File Number: 8510.100.60
• Description: Rio Grande Compact Commission
• Basin: Rio Grande
• Water Division: 3
• Date: 1/1/1960
• Title: Report of the Rio Grande Compact Commission 1960
• Water Supply Pro - Doc Type: Report/Study

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RIO GRANDE COMPACT COMMISSION REPORT

The equipment, method and frequency of measurements at
each gaging station shall be sufficient to obtain records
at least equal in accuracy to those classified as "good" by
the U.S. Geological Survey. Water-stage recorders on the
reservoirs specifically named in Article II of the Compact
shall have sufficient range below Dlaximum reservoir level
to record major fluctuations in storage. Staff gages may
be used to determine fluctuations belOW the range of the
water-stage recorders on these and other large reservoirs,
and staff gages may be used upon approval of the Commission
in lieu of water-stage recorders on small reservoirs,
provided that the frequency of observation is sufficient in
each case to establish any material changes in water levels
in such reservoirs.

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RESERVOIR CAPACITIES L1-

Colorado shall file with the Commission a table of
areas and capacities for each reservoir in the Rio Grande
Basin above Lobatos constructed after 1937; New Mexico
shall file with the Commission a table of areas and capac-
ities for each reservoir in the Rio Grande Basin between
Lobatos and San Marcial constructed after 1929; and Texas
shall file with the Commission tables of areas and capaci-
ties for Elephant Butte Reservoir and for all other reser-
voirs actually available for the storage of water between
Elephant Butte and the first diversion to lands under the
Rio Grande Project.

Whenever it shall appear that any table of areas and
capacities is in error by more than five per cent, the
COIlMission shall use its best efforts to have are-survey
made and a corrected table of areas and capacities to be
substituted as soon as practicable. To the end that the
Elephant Butte effective supply may be computed accurately,
the Commission shall use its best efforts to have the rate
of accumulation and the place of deposition of silt in
Elephant Butte Reservoir checked at least every three years.

ACTUAL SPILL~

(a) Water releases from Elephant Butte in excess of
Project requirements, which is currently passed through
Caballo Reservoir, prior to the time of spill, shall be
deemed to have been Usable Water released in anticipation
of spill, or Credit Water if such release shall have been
authorized.

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1 Amended at Eleventh Annual Meeting, February 23, 1950.
2 Adopted at Fourth Annual Meeting, February 24, 1943.