WSP01662

• File Number: 8220.125.N
• Description: San Juan-Chama Project
• State: NM
• Basin: San Juan/Dolores
• Date: 12/1/2001
• Title: San Juan-Chama Project Water Accounting for 2001
• Water Supply Pro - Doc Type: Report/Study

San Juan-Chama
Water Accounting
Albuquerque Area Office
October 2001

The natural inflow into Heron Reservoir during the month of October was computed to be 145
acre-feet (AF) as shown in Table 3. There were 1225 AF net San Juan-Chama (SJ-C) losses,
as shown in Table 2. There were no diversions through Azotea Tunnel this month. The
monthly computations for Heron Reservoir are summarized in Tables 1-3.

There was 0.54 inches of precipitation at Heron Reservoir, which is 38% of the
October running average of 1.43 inches.

There was a total of 145 AF of Natural (RG) released from Heron through seepage (Table 3) .
There was 1968 AF of SJ-C released for the month of October, of which 1236 AF was released
for.the Middle Rio Grande Conservancy District (MRGCD) to their pool in El Vado. 732 AF was
released for the city of Albuquerque (City) to their pool in Abiquiu.

There was a total of 319 AF of SJ-C released for the month of October from El Vado, this
was from the MRGCD's pool for irrigation needs down stream (Table 4).

There was 3247 AF of SJ-C water released from Abiquiu, of which the total was released
from MRGCD' s pool for irrigation needs (Table 4 may be slightly different from the letter
due to rounding.

There was 163 AF of SJ-C released from the City's pool in Elephant Butte for the Wine
Growers depletions for 2001.

Total inflow into Narnbe Falls Reservoir was computed to be 129 AF. There were 32 AF of
losses on the reservoir. Table 4 summarizes San Juan-Chama 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.

Table 5C provides water accounting information for Elephant Butte Reservoir. Please note
content information for Elephant Butte has been corrected taking into accountant the latest
area capacity tables effective January 1, 2001.

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

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