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I I I I I I I I I II I I I I I I I I . TABLE 4. Stream Gages Analyzed in TM-l Years of 100-Year Record (as Flow at Gaqe Site Drainaqe Area of 1975) the Gaqe 'l'rincher~ Creek above 61. 0 sq. mi. 32 662 cfs Mountain Horne Reservoir Trinchera Creek near 45.0 sq. mi. 51 736 cfs Fort Garland Sangre de Cristo Creek 190.0 sq. mi. 51 1660 cfs near Fort Garland Ute Creek near Fort 32.0 sg. mi. 50 478 cfs Garland Costil~a Creek above 25.1 sq. mi. 22a 416 cfsa Costilla Darn. N.M. a. This gage was restudied by the CWCB. The longer period of record included a very large flow recorded in 195~ as well as flows recorded after the pUblication of TM-l. Based on 51 years of record a 100-year flow of 844 cfs was computed. TABLE 5. Stream Gages Analyzed by the SCS Years of 100-Year Record (as Flow at Gaqe Site Drainaqe Area of 1979) the Gaqe Trinchera Creek near 45.0 sq. mi. 55 743 Fort Garland Sangre de Cristo Creek 190.0 sq. mi. 54 1762 near Fort Garland Ute cree~ near Fort 32.0 sg. mi. 55 402 Garlan Culebra Creek 195.0 sg. mi. a 17/S1b 1041 downstream of Rito Seco Culebra Creek 160.0 sq. mi. a Slc 746c upstream of Rito Seco a. Actual drainage area has been reduced by 60 square miles by the SCS to remove area tributary to Sanchez Reservoir. The CWCB added that area back to the total in plotting calculated flows and in developing the regional curve. There are 17 actual years of record. but the record has been extended to 51 years by correlation with the other gage on Culebra Creek. This gage was restudied by the CWCB because a few more years of record were available since the SCS analysis was performed. Based on 58 years of record the 100-year flow was computed to be 811 cfs. -22- b. c.