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Megan Gutwein <br />November 25, 2019 <br />Page 2 <br /> <br />Martin and Wood Water Consultants, Inc. <br />Though the increase in groundwater levels may also be related to other factors, it is likely that <br />the increase in annual diversions is responsible for a significant portion of the increase in <br />groundwater levels. <br /> <br />We also reviewed the USGS report titled USGS Hydrogeologic characteristics of the valley-fill <br />aquifer in the Arkansas River valley, Crowley and Otero Counties, Colorado. Plate 3 of the <br />USGS report shows groundwater table elevation contours in the area of interest around <br />Schweizer Farm. Plate 3 shows the groundwater gradient is in the northeast to east direction <br />at an approximate slope of 0.57% (45 feet between groundwater wells divided by 7,900 feet). <br />The ground surface slopes in the same general direction at approximately 0.33% (26 feet <br />divided by 7,900 feet). This demonstrates that the depth to the water table increases <br />downgradient from the canal. <br /> <br />In conclusion, review of the groundwater level data confirmed the potential for a shallow <br />groundwater table on the Schweizer Farm in the vicinity of the Catlin Canal. <br /> <br /> <br />0 <br />20,000 <br />40,000 <br />60,000 <br />80,000 <br />100,000 <br />120,000 <br />140,000 <br />160,000 <br />180,000 <br />200,000 <br />220,000 <br />240,000 <br />260,000 <br />280,000 <br />300,0000 <br />2 <br />4 <br />6 <br />8 <br />10 <br />12 <br />14 <br />16 <br />18 <br />20 <br />22 <br />24 <br />26 <br />28 <br />30 <br />Mar-65 Mar-75 Mar-85 Mar-95 Mar-05 Mar-15 Catlin Canal Diversions (acre-feet)Depth to Water (feet below ground surface)Figure 1 -Depth to Groundwater Near Schweizer Farm and <br />Annual Volume of Catlin Canal Diversions <br />Depth to Water (feet below ground surface) <br />USGS Monitoring Well No. 380452103484300 <br />Catlin Canal Diversions (acre-feet) <br />WDID: 1700552