Lottis Creek ISF Proposal with Attachments 10-27-21

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ENCLOSURE - INSTREAM FLOW RECOMMENDATIONS FOR LOTTIS CREEK Below is a description of the proposed instream flow. Additional details can be found in Attachments A- F. Location Lottis Creek is located within the Upper Taylor watershed (HUC-12: 140200010202) in Gunnison County, Water Division 4 (Attachment A).The headwaters originate beneath the northwest side of Fairview Peak (13, 218 feet) in the Fossil Ridge Wilderness. Lottis Creek flows north to Union Park and turns northwest to flow to the confluence with the Taylor Fork of the Gunnison River, downstream of Taylor Park Reservoir(Attachment A).The Lottis Creek watershed is about 42 square miles and is on the Taylor Park Reservoir United States Geologic Survey topographic map (Attachment Q. The stream segment of the proposed instream flow appropriation is approximately 10.3 miles long and starts at the headwaters of Lottis Creek and extends to the confluence with the Taylor Fork of the Gunnison River. Table 1. Land Status in the Lottis Creek Watershed. Total Land Ownership Upper Terminus Lower Terminus Length Private(%) Public(%)1 (miles) Riparian Riparian Confluence with Corridor Corridor Headwaters of 10.3 31% 69% Lottis Creek Taylor Fork v the Watershed Watershed Gunnison River Composition Composition 2% 98% 1. The public land in the Lottis Creek Watershed is managed by the USFS. 2. The riparian corridor ownership percentages were calculated using stream length. The Lottis Creek watershed is 98 percent public land managed by the United States Forest Service (USFS).The riparian corridor is 69 percent public land managed by the USFS. Existing Instream Flow Right Lottis Creek,from the headwaters to the Taylor Fork of the Gunnison River, has a year-round flat rate ISF of 5 cfs (case number 4-83CW227; appropriation date 6/3/1982).This proposal requests an increased summer flow rate of 7.1 cfs from April 1 to October 31.