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Well Augmentation Subdistrict - Loan Feasibility Study Page 6 WAS extends over the same broad area as the CCWCD but is geographically smaller in terms of the number of acres included (Figure 1). The WAS boundaries specifically include only those lands identified in individual contracts with constituents, i.e., the WAS boundaries are not contiguous. WAS covers an aggregate geographic area totaling about 78 square miles. Approximately 214 wells are currently members of the WAS plan for augmentation. WAS member wells have groundwater right priority dates ranging from 1904 to 1966 and approximately 83 percent of the WAS wells have priority dates senior to 1960 (Figure 2). Each WAS well owner has a contract with WAS for augmentation water (Class B, C and D contracts) that currently total approximately 20,400 ac -ft. WAS contracts provide supplemental ground water to some constituents and are the sole water supply for other contract owners. Approximately 96 percent of WAS contracts are for irrigation uses. Figure 2: Water right priority dates associated with WAS constituent wells. WAS operates the plan for augmentation decreed by the Water Court for Division 1 in Case No. 03CW099 (the "WAS Decree" or the "WAS Plan for Augmentation "). The WAS Plan is operated using ten administrative reaches of the South Platte River (Figure 3). The river reaches extend from the highest point of well depletion on the South Platte River near Denver to the lowest point of well depletion near Fort Morgan. The depletions from pumping of each WAS well are assigned to one of these reaches, and depletive effects are then aggregated by reach for replacement purposes. The approximately 20,400 ac -ft of WAS contracts is distributed across reaches as shown in Figure 4. We note that Reaches F, C and A are subdivided into shorter subreaches as shown in Figure 3 but the values shown in Figure 4 are total aggregated amounts for each administrative reach of the WAS Plan. On an annual basis WAS issues a "quota" to its constituent wells. The quota is a percentage of each member's contracted augmentation supply amount, and is an allocation of overall WAS augmentation supplies. As a result of very restrictive terms and conditions in its augmentation plan 1�VLeonardRice ENGINEERS; W C. WAS Constituents Priorities of Groundwater Rights 1s 16 a 14 12 I 6 10 a 8 i 3 Z 6 4 p - le ti ti�i~� 10 I-P 11:01 14+ 14 ", I" I-P 14P 14", 14P 1°�by 14P 1°j ^y 1°�� °� �°� ti tie 1110 10 Year of Appropriation Figure 2: Water right priority dates associated with WAS constituent wells. WAS operates the plan for augmentation decreed by the Water Court for Division 1 in Case No. 03CW099 (the "WAS Decree" or the "WAS Plan for Augmentation "). The WAS Plan is operated using ten administrative reaches of the South Platte River (Figure 3). The river reaches extend from the highest point of well depletion on the South Platte River near Denver to the lowest point of well depletion near Fort Morgan. The depletions from pumping of each WAS well are assigned to one of these reaches, and depletive effects are then aggregated by reach for replacement purposes. The approximately 20,400 ac -ft of WAS contracts is distributed across reaches as shown in Figure 4. We note that Reaches F, C and A are subdivided into shorter subreaches as shown in Figure 3 but the values shown in Figure 4 are total aggregated amounts for each administrative reach of the WAS Plan. On an annual basis WAS issues a "quota" to its constituent wells. The quota is a percentage of each member's contracted augmentation supply amount, and is an allocation of overall WAS augmentation supplies. As a result of very restrictive terms and conditions in its augmentation plan 1�VLeonardRice ENGINEERS; W C.