Laserfiche WebLink
<br />Subtotal I 467 I n/a I 467 I n/a I 96 <br />Mutual Irrigation Company Ownership <br />Leyner Cottonwood Ditch 294 0.54 158 0.21 62 <br />South Boulder Canyon 203 2.9 589 0 0 <br />Ditch <br />Erie Coal Creek Ditch 83 4.9 407 0.56 46 <br />and Res Co. <br />FRICO - Marshall Lake 4 4 16 0.5 2 <br />Div. <br />Subtotal 584 n/a 1 ,170 n/a 110 <br />Total 7,758 n'a 7,022 n'a 6,823 <br /> <br />As shown in Table 2-2, Erie's existing ditch water rights yield approximately 1,170 <br />AFY in an average year and 110 AFY in a dry year. The use of raw ditch water is <br />advantageous over using treated potable water for irrigation in that ditch water rights <br />used for irrigation may not need to be converted to municipal use, ditch water <br />requires no treatment (providing economic savings), and unlike direct reuse of treated <br />wastewater, ditch water is not subject to the provisions of Colorado's reuse <br />regulations (Regulation 84). The disadvantages of using ditch water are that it is <br />significantly impacted by hydrology variability and is delivered via gravity (rather <br />than a pressurized delivery system). <br /> <br />Erie is currently using raw ditch water to irrigate parks and open space in the new <br />Erie Commons development. The amount of non-potable water used to irrigate the <br />Erie Commons development will increase as additional landscaping and recreational <br />facilities are developed. Non-potable water is also used to irrigate the Vista Ridge golf <br />course. This non-potable water supply currently consists of Erie Windy Gap return <br />flows (See Section 2.6), Coal Creek raw water, leased Marshall Lake shares, and leased <br />treated effluent (reuse) from Superior and Louisville. Non-potable water will continue <br />to be used to irrigate the Vista Ridge golf course; however, the source of these non- <br />potable supplies will likely change as lease agreements terminate. <br /> <br />2.3 System Limitations <br /> <br />Erie is located in the northern area identified by the Statewide Water Supply Initiative <br />(SWSI), which comprises the northwest portion of the South Platte River Basin. SWSI <br />indicates that the northern area of the South Platte River Basin will need an additional <br />18,400 AFY of water to meet 2030 demands. There are a variety of regional projects <br />that are currently undergoing environmental review to bring supplies to the area. <br /> <br />In order to meet its growing needs, Erie is anticipating the acquisition of additional <br />water rights and is actively involved in the Windy Gap Firming Project and Northern <br />Integrated Water Supply Plan (NISP) regional water supply projects. Table 2-3 briefly <br />summarizes the conditions of Erie's water supply system. <br /> <br />T:\9228 - Erie\Conservation Plan\Completion Reports\50% Completion Report.doc <br />