WSP12003

• File Number: 8220.125.N
• Description: San Juan-Chama Project
• State: NM
• Basin: San Juan/Dolores
• Date: 12/1/2000
• Title: San Juan-Chama Project Water Accounting for 2000
• Water Supply Pro - Doc Type: Report/Study

San Juan-Chama
Water Accounting
Albuquerque Area Office
September 2000

The natural inflow into Heron Reservoir during the month- of September was
computed to pe 130 acre-feet (AF) as shown in Table 3. There were 2058 AF net
San Juan-Chama (SJ-C) losses, as shown in Table 2. There were no diversions
through Azotea Tunnel this month.

There was a total of 130 AF of Natural (RG) released from Heron. There was 27899
AF of SJ-C released in September of which 8023 AF was from th City of Albuquerque
(City) for down stream use by the Middle Rio Grande Conservancy District
(MRGCD) ,19461 AF was released by MRGCD for supplemental irrigation water in the
middle valley, 415 AF was released from Cochiti Rec pool replacement water.

There was a total of 3809 AF released from EI Vado for MRGCD's down stream use.

There were 14981 AF of SJ-C water released from storage in Abiquiu, of which 2180
AF was MRGCD's release for irrigation demand, 12801 AF was released from the City
(USBR lease) for supplemental irrigation water in the middle valley.

There was
September
Reservoir

0.28 inches of precipitation at
running average of 1.70 inches.
are summarized in Tables 1-3.

Heron Reservoir, which is 16% of the
The monthly computations for Heron

Total inflow into Nambe Falls Reservoir was computed to be 121 AF. There were 32
AF of losses on the reservoir. Table 4 summarizes San Juan-Chams water at Otowi.

Estimated sediment deposition in the San Juan-Chama pools at Abiquiu and Jemez
Canyon Reservoirs, and Cochiti Lake are presented in Tables 5A-5C. Storage and
evaporation of Rio Grande water in El Vado and Abiquiu Reservoirs are shown in
Table 6.

All data are prOVisional and subject to revision as final data are collected and
analyzed.

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