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<br /> <br />e <br /> <br />e <br /> <br />According to the U. S. Soil Conservation Service the present <br />acity of the Model Intake Canal is 400 cfs in the 2.4 mile section <br />cap <br />of the canal from the headgate at the Purgatoire River to the NE1/4, <br />NW1/4t Section 27, T32S, R63W. This section of the canal has not <br />been cleaned out yet, but the remainder has been recently cleaned. <br />The present capacity of the remaining 11.0 miles of the Model Intake <br />canal, as determined by the SCS, is 820 cfs plus freeboard. <br />The Model Reservoir is the water storage facility in the Model <br />Ditch system. During periods when diversions from the Purgatoire <br />River and the several arroyas exceed the irrigation requirementst <br />water is stored in the Model Reservoir. Releases are made as dictated <br />by irrigation needs. The storage capacity of the reservoir has not <br />been determined since 1946t at which time the capacity was 6t200 acre- <br />feet. Additional sedimentation and deterioration of the dam have occurred <br />since that measurement was made. Although no recent measurement has <br />been madet the estimated present capacity is about 5,000 acre-feet. <br />Based on a water balance study, it is estimated that about 17 percent <br />of the water in storage is lost each month due to evaporation and seepage <br />from the Model Reservoir. For examplet if 5,000 acre-feet or water was <br />in storage in the reservoir, 90 percent of this water would be lost <br />to evaporation and seepage within 12 months assuming that no water <br />was released. This means it is not practical to use this leaky reservoir <br />to carry water over for more than a few months. <br />The Model Ditch delivers water from the Model Reservoir to the <br />irrigated area. The ditch is 13.7 miles in length from the Model Reservoir <br />to the Blackwell Arroya, near the end of the ditch. The Model Ditch and <br />its laterals in the Model area intercept water from Blackwell Arroya <br />for distribution to the irrigated areas. Most of the land irrigated <br />by the Model Ditch is located within the Model Tract, a 20,000 acre area <br />near the community of Model. The Model Tract is shown on the attached <br />map SK-318. Parshall flumes are used to measure the deliveries of water <br />to the various laterals under the Model Ditch. The water delivered to <br />the fanns is measured at Parshall flumes and lldivision boxes.11 <br /> <br />e <br /> <br />10 <br /> <br />....-- <br />