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
March 2000

The natural inflow into Heron Reservoir during the month of March was computed
to be 4816 acre-feet (AF) as shown in Table 3. There were 158 AF net San Juan-
Chama (SJ-C) losses, as shown in Table 2. There were 536 AF diverted through
Azotea Tunnel this month.

There was a total of 150 AF of Natural (RG) released from Heron. There was 30454
AF of SJ-C released in February of which 1200 AF was the City of Los Alamos's
delivery to the City of Albuquerque's pool that the Bureau of Reclamation
(USBR)leases for supplemental water (USBR lease)in Abiquiu, 18617 AF was the
Middle Rio Grande Conservancy District's (MRGCD) delivery to El Vado, 1000 AF was
Espanola's delivery to the City pool (USBR' s lease) in Abiquiu, 6500 AF of
Jicarilla's delivery to the City (USBR lease) in Abiquiu, and 3137 of un
contracted water to the City pool (USBR lease) in Abiquiu.

The last few days of March had a few storms that added to the tributary inflows
to Heron (4816 AF), this increase did not show up at Lower Willow Creek, thus not
being detected until end of month calculations, this will be released in April.

There were 876 AF released from El Vado in the month of March, of which the total
was MRGCD's to there pool in Abiquiu.

There were 21798 AF of SJ-C water released from Abiquiu, of which 10,000 AF was
an internal transfer from the City of Santa Fe's pool to the City's pool (USBR
lease), 2041 was released from the City to Jemez, 154 AF was released from the
City for Nambe, 4000 AF was released from the City to Elephant Butte, 5122 AF was
released from the City pool (USBR's lease) for supplemental irrigation water in
the middle valley.

There was 2.53 inches of precipitation at
March (running average of 1.70 inches).
Reservoir are summarized in Tables 1-3.

Heron Reservoir, which is 149% of the
The monthly computations for Heron

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Total inflow into Nambe Falls Reservoir was computed to be 265 AF. There were 11
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.

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

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