Laserfiche WebLink
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />5.3 GREENWAY FOUNDATION'S AND CITY OF LITTLETON'S PROPOSED USE <br />OF CHATFIELD RESERVOIR REALLOCATED STORAGE <br /> <br />The Greenway Foundation and the City of Littleton propose to utilize reallocated storage in <br />Chatfield Reservoir to supplement minimum streamflows in the South Platte River through the <br />Denver Metro area. Water available under a junior water right or "free river" conditions would <br />be diverted to storage for this purpose. This diversion to storage was estimated using Denver <br />Water's CHATFREE data. <br /> <br />Target release schedules for the Greenway Foundation's use ofreallocated storage in Chatfield <br />Reservoir were developed based on maintaining a flow of 150 cfs downstream from the <br />Littleton/Englewood Wastewater Treatment Plan (WWTP) discharge from Memorial Day <br />weekend through Labor Day weekend. The City of Littleton proposes to utilize the reallocated <br />storage to supplement the minimum flows in the South Platte River. Their target flows are 30 cfs <br />in the winter (November through March) and 100 cfs for the rest of the year in the reach ofthe <br />South Platte River through South Platte River Park. <br /> <br />For purposes of this investigation, the Greenway Foundation's and the City of Littleton's <br />instream flow targets were combined into one minimum instream flow target immediately below <br />the Littleton/Englewood wastewater treatment plant (WWTP) discharge: <br /> <br />. <br /> <br />Memorial Day to Labor Day: 150 cfs <br />November-March: 30 cfs <br />April-May and September-October: 100 cfs <br /> <br />. <br /> <br />. <br /> <br />Estimated South Platte River flows immediately downstream from the LittletonlEnglewood <br />WWTP for existing conditions for the study period (1946-1996) were provided by Denver <br />Water. <br /> <br />5.4 CENTRAL COLORADO WATER CONSERVANCY DISTRICT'S PROPOSED <br />USE OF REALLOCATED CHATFIELD RESERVOIR STORAGE <br /> <br />The Central Colorado Water Conservancy District proposes to utilize releases from reallocated <br />storage in Chatfield Reservoir to augment out of priority depletions from wells under Central's <br />augmentation plan. Water available under a junior water right or "free river" conditions would <br />be diverted to storage for this purpose. This diversion to storage was estimated using Denver <br />Water's CHATFREE data. <br /> <br />Central proposes to release available water from reallocated storage at a relatively constant rate <br />of 8 cfs in the summer (June - August) and 7 cfs during the remainder of the year. <br /> <br />P:\Data\GEN\CWCB\Chatfield\Report12.02\RevisedChatReport 1 03\Report2-03 .doc <br /> <br />11 <br />