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. . ,/ , The average annual project cost to the operators and ~dners will be about $5.30 per acre per year for 25,000 acres. This includes $1.50 for the on-farm land treatment rnaasures for improved agricultural water management, as stated in the following section, Status of L~d Tra&uw.ant, and $3.80 for the structural rnaasures. Status of Land Treatmant The Bureau of Land Managernant and the U. S. Forest Service have control of the watershed land above the structure site. The Forest Service has a ranger office in Saguache for the Rio Gr&nde National Forest. The Bureau of Land Managernant has an office in Honte Vista which has control of their watershed land. The irrigated valley from the headwaters to the Town of Saguache and the irrigated land below Saguache is mostly in private mmership. Land treatment measures are being applied through the Center Soil Con- servation District. Thirty-seven of the thirty-eight opelNri:lng \IIlits are coope~tors of the district. (- On-farm land treatment maasures associated with the irrigation structural measures to derive benefits from mora intensive use &nd in- creased crop yields average about $11 per acre. This average cost is based on measures needed on 6,700 acres of six watershed ranches covering 13,550 acres of deeded land. The average cost of $11 per acre amortized at 10 percent interest for a period of 20 years is equal to an average annual cost of $1.29 per acre. Operation and mainenance raquirau.ants will be low with a pasture-hay cropping system and a Imf sedimant yield. Using 1. 5 percent for operation and maintemmce, tHe average annual cost per acre would be $0.17. The estimated average annual cost of land treatment measures per acra is $1. 50. Existing Information USGS Stream Guage Records USGS topographic maps Aerial photographs General soil maps Revised Weather Bureau Technical Paper No. ~o Revised Weather Bureau Technical Paper No. ~9 Procedures Used in Developing Preliminary Investigation Information Economics ,-- ( Through interviews with landowners and Soil Conservation Service Technicians working in the Saguache Watershed, land use and present yields, future yield without a project and yields with a project were established. A cost-return training workshop was held with operators 8 ~~1 L\