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" 0'1876 including that collected since 19531 does not show sufficient water for operation under conditions (d) and \e) without materially depleting the inflow to John Martin Reservoir in the absence of a source of replacement water. At this time it is impractical to buUd replacement storage in Trinidad Reservoir on the chance that replacement water may be available at some indef'1nite time in the future. There are presently 13 ditches operating in the Trinidad area. Two of these, the Lave and Lopez, divert upstream from Trinidad and are wholly or partially eliminated by the reservoir construction. The project plan provides for serving the other 11 ditches. The Purgatoire acre-feet annually. 52,000 acre-feet. River at Trinidad damsite has averaged about 62,000 Project ditches have historically diverted about Because of the erratic occurrence of direct flows and lack of storage control, about 16,000 acre-feet of this amount is applied in excess of crop requirements. The remaining 36,000 acre-feet though applied in season is frequently applied to crops which have already suffered drought damage. Through storage and regulation, the Trinidad Project assures that all of the water diverted is efficiently used. Hydrology The hydrology studies were based on the period 1925 through 1951. The future water supplies end future water requirements are based on the streamflow, weather and diversion records available for this period. In the study, the Arkansas River Compact and the water rights upstream and downstream on the Purgatoire River were :fUlly recognized. The water rights belonging to the 11 ditches participating in the' project are t.:;' cOl:lcer.'ned, All of these rights except the small John's Lake storage :ight are used under the project plan. Depletions from upstream rights are reflected in the historic streamflow records and no additional depletions are foreseeable. Bypasses for the downstream rights were evaluated in the operation studies. The existing decreed water rights of the project area are not subject to any other restrictions. Any new water rights will be restricted by the Arkansas River Compact. An uninterrupted record of streamflow for the 33-year study period is available for the Trinidad gage. The historic runoff from the 195 square miles above this gage is considered representative of the future inflow to Trinidad Reservoir. The average annual flow at this gage is 62,100 acre-feet. Yearly flows have varied from 16,300 acre-feet in 1951 to 191,300 acre-feet in 1942. Similar great variations in annual flow are expected to occur in the future. 3 ,