Grey Reef

Description

Grey Reef is a tail water of the North Platte River off Grey Reef Dam below Alcova Reservoir.  This tail water stays open and fishable year round with winter flows around 500 CFS and high water flows during run off and flush up to 6000 or 7000 CFS each year. Known for its opportunity for big browns and rainbows this is a stretch of water every angle should fish at least ones in there life. With several access bank fishing is available but many stretches are only fishable while floating the river.

Most up to date flows can be found here:
BOR flows at Gray Reef Dam

Location and Directions

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Recent Reports

Gray ReefNorth Platte RiverWyoming

Grey Reef Flushing 2020

Reef flush will be from March 28th to April 6th. From Casper Game & Fish office March 24, 2020 North Platte River flushing flow to run for ten days footer   CASPER – The Wyoming Game and Fish Department cautions sportsmen to be aware of sizeable increases in water flows in the North Platte River for 10 days beginning March 28 as part of a flushing flow project.   Game and Fish has requested the flushing flow in order to maintain fish spawning habitats and to increase production of invertebrates that fish depend on for food. Flushing flows are typically requested to run in mid-March; however, due to scheduled maintenance activities on Gray Reef Dam, the start date had to be pushed back two weeks in 2020. The Bureau of Reclamation will begin releasing additional water from Gray Reef Reservoir in the early morning hours beginning Saturday, March 28. Flows will increase from approximately 500 cubic feet per second (cfs) to 4,000 cfs and will then gradually decrease back to 500 cfs each day, with the maximum flow occurring between 3-7 a.m. Flows from Gray Reef Dam will return to 500 cfs at 10 a.m. each day. The schedule will be repeated through April 6. The flows below Gray Reef Dam will then be stabilized at approximately 500 cfs following completion of the ten-day cycle. This schedule may be modified due to unforeseen circumstances regarding the maintenance activities.   “Data show these flows are important to trout spawning and to the numbers of trout in the river,” said Matt Hahn, fisheries supervisor for the Casper region. In the past, the trout population had fallen to less than 400 trout per mile, even with stocking. Annual flushing flows began in 1995, and now the trout population averages over 3,500 per mile.   The Game and Fish Department advises sportsmen and recreationists to be aware of the potential dangers related to flushing flows. Because the flush will span the weekend, there is potential for more people to be wading or floating the river. Those using the river during the flushing flow should consider the fluctuating water levels and be aware that areas that can be waded effectively at 500 cfs are not safe at 4,000 cfs.
March 17, 2020
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