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Grey Reef Fishing Report Provided By North Platte River Fly Shop

Grey Reef fishing reports and video report on the North Platte River is a free service provided by our Casper, Wyoming based fly shop fishing guides and customers. These Grey Reef fishing reports will be updated as often as needed and we will always change the report if any sudden changes should occur. However please understand that sudden storms can often change conditions overnight in and around Grey Reef before we can change the report. We welcome any fishing reports that you would like to provide on Grey Reef by giving the fly shop a call or email. 

grey reef fishing report miracle mile fishing report fremont canyon fishing report  

 Grey Reef Fishing Report

Grey Reef - Hot Flies

Midges, Scuds, Red rock worms (annelids), San Juan worms, Hot Head Leeches, Squirrel Leeches, Halo midges. Swinging and dead drifting both the Brown Bite Me Buggers and Vanilla Buggers.  


10-30-19 Well as we go into winter I think everyone knows the routine by now. Streamers, Midges, Scuds, Eggs and Leeches will be the predominent patterns throughout the winter. This will be our last update until spring unless something major happens.

8-20-2019 Grey Reef Video Fishing Report

8-12-19 Tricos in the mornings switching to Caddis, Hoppers, Pats Rubber Legs, leeches and streamers in the afternoons.

7-16-19 It's been a strange year on Grey Reef with flows held back so long then bumped in June. So for awhile our hatches were ahead of schedule now they've fallen behind schedule. But look for Pmd's, Caddis, and Yellow Sallies to be your main bugs of choice along with Pats Rubber Legs, leeches and streamers.

6/25/19 Flows are finally ramping up on Grey Reef.....looking at 2100 as of this morning. Should cool the water back down and really kick them into high gear.

6/5/19 The reef is still at 500cfs with all the flooding going on in Neb. we don't see the levels coming up anytime soon. In turn, the river is warming up faster than normal so we are seeing some earlier hatchs. Pmd's, Caddis and Yellow Sallies have already started.

4-29-2010 Grey Reef Video Fishing Report

Grey Reef / Miracle Mile / Fremont Canyon Fishing Report from mark boname on Vimeo.

4-10-19 The reef is fishing great. Midges, egg patterns, hothead leaches, pine squirrel leaches and annelids are the hot ones. The BWO's should start in the next couple weeks. Please stay off the Redds!!

3-8-2019 First guide video Grey Reef fishing report of the 2019!

Grey Reef Fishing Report from mark boname on Vimeo.

3-7-19 Flushing Flows!!

Reclamation announces temporary fluctuation of North Platte River flow downstream of Gray Reef Dam

MILLS, Wyoming – The Bureau of Reclamation, in response to a request from the Wyoming Game and Fish Department, has scheduled a series of fluctuating flows in the North Platte River downstream of Gray Reef Dam.

“The purpose of the fluctuations is to improve trout reproduction in the river,” said Wyoming Area Manager, Carlie Ronca. This spring, the Wyoming Game & Fish has requested flows for seven consecutive days. The Wyoming Game & Fish will collect data before, during, and after the flushing flow in order to evaluate its effectiveness.

On March 29, flows in the river below Gray Reef Dam will fluctuate from 500 cubic feet per second (cfs) to 4000 cfs according to the following schedule:

HOURS                                                GRAY REEF OUTFLOWS (cfs)

00:01 to 01:00 a.m.                             500

01:00 to 02:00 a.m.                             2000

02:00 to 04:00 a.m.                             4000

04:00 to 04:30 a.m.                             3000

04:30 to 05:00 a.m.                             2000               

05:00 to 06:00 a.m.                             1000

06:00 to midnight                                500


This schedule will be repeated daily from March 29 through April 7. On April 7, the final day of the fluctuating flows, the peak flow of 4,000 cfs will be released for one additional hour and flows will ramp down to 500 cfs at 7:00 a.m. The schedule may be modified depending on river ice conditions.


The flushing flows are expected to clean the spawning gravels of fine sediment which has accumulated over the winter. The fluctuations in the river flow will be achieved without loss of power generation and the water released from Alcova Reservoir will be restored downstream in Glendo Reservoir.

The public is urged to use caution during this period of rapid fluctuation of flows below Gray Reef Dam.

11-29-18  We are now closed on Saturday and Sundays for the Winter until March. Other than midges the main hatches have become dormant on the Grey Reef Section so keep your box full of midges, scuds, annelids and leeches for the winter. DON'T FORGET TO PICK UP YOUR 2019 FISHING LICENSE BEFORE NEW YEARS DAY!!!

9/25/18  Platte River / Grey Reef / Fly Fishing Guide Report

9-23-18 Grey Reef is fishing well in mornings on Tricos switcing to BWO's, Psuedo's and Caddis late morning to evening. Streamer action is also starting to kick in. Still alot of weeds in upper section but starts to clear out below Government Bridge.

7/20/18 Platte River / Grey Reef / Miracle Mile / Fremont Canyon Wyoming Fly Fishing Guide Report


Gray Reef
Thanks to flushing flows this spring, the trout had lots of clean gravel for spawning, and we are still seeing a few fish on the beds, doing their thing. Leave them be and go find the feeders! Currently the Reef is at 3000 cfs, water temperatures are approaching perfect, and the river looks awesome! As things warm, the fish will start to take advantage of the great structure the Reef section has to offer. It's beyond fun to target these feeders as they hold behind shelves and in the riffles and skinny tail-outs. They'll slam your fly and have your reel singing so fast your guide won't even have time to yell "set it!" Give them the reigns on that initial charge, then dance them back to the net like it's prom night! 
Casper to Glenrock 
Our guides have this section dialed to the max and it's one of our favorites for targeting big summertime browns and rainbows. It's a great option for escaping the crowds, taking in some new scenery, and getting your flies in front of fat, unpressured fish. Some early summer thunderstorms, coupled with inflows of irrigation water, have lately colored up the water a bit through and below town, but don't let this fool you. If you talk to our guides, they'll tell you that a little color can actually put the trout in "annihilation" mode. Limited visibility makes trout feel safe from predators, and it makes them more impulsive feeders because they have less time to decide whether to eat your fly. In short, they are going to inhale your offering if it looks right.

4-24-18 Grey Reef Video Fishing Report

Grey Reef Fishing Report from mark boname on Vimeo.

4-14-18 We think spring has finally sprung in Wyoming, but that does not mean not to come prepared for any kind of weather. Grey Reef has been on fire now for several weeks and we expect the BWO hatch to really pick up starting this week. However the main ticket has been red annelids and glo bugs along with some streamer activity. The flows have been bumped to a 1000 cfs but watch that as it may increase if they decide they need to make room for spring runoff.

Grey Reef Fishing Report 3-26-18 from mark boname on Vimeo.



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