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San Juan-Chama Water Accounting Albuquerque Area Office October 1995 The natural inflow into Heron Reservoir during the month of October was computed to be 620 acre-feet (a. f.) as shown on Table 3. Net San Juan-Chama losses were 1,180 a. f. as shown on Table 2. There were no diversions through Azotea Tunnel this month. There was a total of 160 a. f. of natural released (as seepage) in October from Heron. No San Juan-Chama was released during October. Total precipitation at Heron Reservoir was 1.47 inches which is 87% of normal. The monthly computations for Heron Reservoir are summarized in Tables 1-3. In October a total of 41 a. f. was borrowed for Bernalillo from the City of Albuquerque in Abiquiu below Otowi (SEO letter October 16, 1995). A total of 213 a. f. was released for Sante Fe from Abiquiu below Otowi and 6 a.f. above Otowi (SEO letter October 23, 1995). A total of 21 ,754 a. f. was borrowed from the City of Albuquerque in Abiquiu for MRGCD to meet irrigation demand below Otowi. A total of 150 a.f. was borrowed from the City of Albuquerque in Abiquiu for Nambe Falls Reservoir. A total of 567 a.f. was borrowed from the City of Albuquerque in Abiquiu for Cochiti Lake. At the end of October, MRGCDs balance was 37,712 a.f. for San Juan-Chama previously borrowed from the City of Albuquerque in Abiquiu to meet irrigation demand. Total inflow into Nambe Falls Reservoir was computed to be 362 a.f. Evaporation loss on the reservoir was 3 a.f. 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 EI Vado and Abiquiu Reservoirs are shown on Table 6. All data are provisional and subject to revision as final data are collected and analyzed.