Wade44/100
Wading is in play only where your chosen access has clear footing, legal entry, and no forced crossings.
All Wyoming reports
Fly fishing report · West
North Platte River at Grey Reef
Is North Platte River at Grey Reef worth the trip today? Check flow, weather, hatches, access, and rules for Wyoming before you go.
See the flow chart ↓Photo: Tony Webster Opens in a new tab. · CC BY 4.0
Good day to fish?Latest river check
Caution
Maybe. Read the cautions first.
56
Best option: Bank / edge. Bank and edge fishing remains a practical low-commitment option if access is legal and footing is safe.
Update time and confidence
Live data checkMediumHow much of the live flow, weather, and alert data came back.
Today's callLowNo structured live flow
Score calculated Aug 29, 2026, 10:23 PM MDTSources checked often
Best access methodBank / edge
These scores compare the risks of wading, bank fishing, and floating.
Bank / edge · Best fit49/100
Bank and edge fishing remains a practical low-commitment option if access is legal and footing is safe.
Float46/100
A float is in play where this report supports boat access and wind, releases, and shuttle logistics are manageable.
Your plan
Today's North Platte River at Grey Reef plan.
Grey Reef is not one undifferentiated tailwater. The core rule applies from Gray Reef Dam to Government Bridge, while two smaller subreaches close April 1 through May 15. Use current USBR GGWY discharge and route around only the segments actually closed.
- Check first
- USBR GGWY is the current official river-discharge station. USGS 06642000 ended continuous discharge in 1998 and is not configured as live.
- Try
- Open USBR GGWY and the current rule map before choosing dam, ramp, or downstream access.
- Leave when
- Skip for active flushing flows, severe wind or lightning, an inaccessible launch, unknown current discharge, or any plan that enters a signed spring closure.
Live river check
What the river is doing
Check the latest flow and weather before you go. A quick change can make the river harder or less safe to fish.
Showing server-checked river conditions while current readings refresh.
- Flow
- —
- Live flow is not available here.
- Air now
- 66°F
Current NWS forecast period
- Next 24h high
- 79.0°F
NWS air forecast near
- Rain chance
- 7%
For this forecast period
This is an air forecast, not a river-temperature reading. Check the water with a stream thermometer before fishing in hot weather.
Latest stored weather check
Partly Cloudy
Partly Cloudy
- Wind
- 16 mph
- Weather checked
RiverReports chart
Recent flow
RiverReports gauge
BlueStreamFly cannot read the latest value from this image. Check the chart on RiverReports Opens in a new tab.
More forecast and source details
National Weather Service
North Platte River at Gray Reef Dam
The National Weather Service forecast is temporarily unavailable.
Live data
Where these readings come from
RiverReports gauge: North Platte River at Grey Reef (USBR-backed)
How to fish it
How to fish North Platte River at Grey Reef today.
A fresh stable USBR trend, open chosen subreach, manageable wind, and legal launch make the cleanest nymph, dry-fly, or streamer plan. Because USBR is not yet a structured score provider, flow-dependent score confidence must remain limited rather than borrowing a dead USGS feed.
Stable USBR trend
Choose an open segment and match depth, weight, and boat plan to the actual release.
Flushing flow or sharp change
Treat the official notice as a hard safety override and stay off the river during the pulse.
Spring closure dates
Route around the two signed closed subreaches. Do not fish or launch into them.
High wind or lightning
Avoid exposed floats and open-river launches even when discharge looks favorable.
Fishing words used on this page
- U.S. Geological Survey (USGS) gauge
- A USGS gauge is an official river station that measures flow or water height.
- Cubic feet per second (cfs)
- Cubic feet per second, or cfs, shows how much water passes the gauge each second.
- Nymph
- A nymph is a young water insect. Anglers also use the word for a fly that copies it.
- Blue-winged olive (BWO)
- Blue-winged olives, or BWOs, are small mayflies that often hatch in cool or cloudy weather.
- Caddis
- Caddis are small water insects. The adults look a little like tiny moths.
- Emerger
- An emerger copies an insect as it rises from below the water toward the surface.
- Midge
- Midges are tiny flies and a common trout food, especially in cold water.
- Pale morning dun (PMD)
- Pale morning duns, or PMDs, are light-colored mayflies that often hatch in warmer months.
- Scud or cressbug
- Scuds look like tiny freshwater shrimp. Cressbugs are small bugs that crawl along the river bottom.
- Streamer
- A streamer is a fly that looks like a small fish, leech, or other swimming food.
Why this call
Why this score
FlowUse caution
RiverReports is linked for the flow chart, but this page does not have a structured live flow value the score can read automatically. Treat the rating as conservative and open the chart before committing.
Local scoring depthUse caution
This page is using baseline river-specific guidance while deeper local scoring is still being reviewed. Use the live sources and local checks before relying on the rating.
Best mode nowUse caution
Bank / edge: Bank and edge fishing remains a practical low-commitment option if access is legal and footing is safe.
SeasonHelps
Summer: PMDs, caddis, Yellow Sallies, and tricos can matter with stable releases and manageable heat.
WeatherHelps
The current NWS air forecast is about 66F, and the next 24-hour high reaches about 79F. Partly Cloudy.
Trip notes
Trip notes
Check these before you choose a reach.
Favor a fresh stable USBR GGWY trend that fits the chosen wade or boat plan. The page intentionally avoids a universal threshold and a dead USGS shortcut.
Skip for active flushing flows, severe wind or lightning, an inaccessible launch, unknown current discharge, or any plan that enters a signed spring closure.
Choose the open segment and access first, check GGWY, verify the closure dates and signs, then rig for the depth you actually find.
Use another open Grey Reef segment or a separately verified Wyoming river rather than fishing a closure or forcing unsafe wind.
What to try
North Platte River at Grey Reef flies through the year.
Match the time of year, then let rising fish and current speed guide the next change.
SeasonWhat to look forFlies to try
Year-roundCurrent
What to look forMidges; scuds, annelids, and leeches are food rather than hatches
Flies to try
Also try black beauty, scud
Spring
What to look forBWOs and midges
Early to midsummerCurrent
What to look forPMDs, caddis, and Yellow Sallies
Late summer to fallCurrent
What to look forTricos, caddis, BWOs, and midges
Flies to try
Also try Trico spinner
Each fly name opens its matching Fly Box guide.
Access and safety
North Platte River at Grey Reef access and rules.
Use these places as starting points. Open the access link below and check posted signs before you park or enter. From Gray Reef Dam to Wyoming Highway 220/Government Bridge, the 2026 rule is one trout with all trout under 20 inches released, single-point barbless-hook artificial flies or lures only, and pegged attractors prohibited. Separate signed segments at the gauge cables and from Ledge Creek toward S Gulch close April 1-May 15. Current Wyoming rules and signs are the legal authority.
Gray Reef Dam recreation area
USBR documents the fishing pier, restroom, primitive camp, small-craft launch, and ramp/parking roughly one-half mile below the dam.
Ledge Creek
BLM identifies this as watercraft-only access with public/private boundary markers. It is also part of a spring closure boundary and must be checked carefully.
Government Bridge area
The downstream endpoint for the core special-rule reach. Verify current public access and private-bank markers before a float.
Ledge Creek is watercraft-only access. Do not describe it as ordinary roadside bank entry.
Blue boundary markers indicate public land and red markers private land in the BLM area. Follow current signs.
Flushing-flow schedules, ramp conditions, wind, and shuttle logistics should be confirmed before launching.
More rules and access notices
Seasonal — check datesSeasonal closure
Grey Reef gauge-cable spring closure
Applies to: Between the signed gauge-cable crossings, with the first crossing about 700 yards below Gray Reef Dam
When: April 1-May 15 annually
Source reviewed:
This is one signed subreach, not a closure of the full dam-to-Government Bridge corridor.
Open official source in a new tabSeasonal — check datesSeasonal closure
Grey Reef Ledge Creek to S Gulch spring closure
Applies to: Ledge Creek confluence downstream about 1.2 miles to S Gulch
When: April 1-May 15 annually
Source reviewed:
This is a second, separate signed subreach, not a closure of the full tailwater.
Open official source in a new tab
River sources
Official North Platte River at Grey Reef sources.
Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.
How this report was checked
How this report was checked
Reviewed byBlueStreamFly River Review Team
Trip guidance checked
What was checked: This restored report is maintained from official flow, regulation, access, weather, and public-land sources. Planning guidance is separated from live observations and legal rules.
Live measurements and forecasts keep their provider timestamps. Rules, access, and trip guidance use the source-review date shown here. BlueStreamFly planning advice is editorial interpretation, not an agency notice.
First-hand experience: BlueStreamFly does not claim a first-hand visit or local field test for this report unless a real contributor is explicitly named and linked.
Rules and closures
Check what is allowed, where the rule applies, and whether the river is open.
Flow and weather
Check the latest river reading and forecast before you leave.
Access and land
Check public entry points, land rules, and seasonal access changes.
More helpful links
Use these links for stocking, safety, and other local details.
See all 13 checked sources
Rules and closures
Check what is allowed, where the rule applies, and whether the river is open.
What this source covers
Open the current rules and check the river section, season, and special limits.
What this source covers
Open this notice to check its current status, dates, and affected river section.
Applies to: Between the signed gauge-cable crossings, with the first crossing about 700 yards below Gray Reef Dam
When: April 1-May 15 annually
This is one signed subreach, not a closure of the full dam-to-Government Bridge corridor.
What this source covers
Open this notice to check its current status, dates, and affected river section.
Applies to: Ledge Creek confluence downstream about 1.2 miles to S Gulch
When: April 1-May 15 annually
This is a second, separate signed subreach, not a closure of the full tailwater.
What this source covers
Open the current rules and check the river section, season, and special limits.
Flow and weather
Check the latest river reading and forecast before you leave.
What this source covers
Open this page and check the latest safety advice before your trip.
What this source covers
Open this river reading to check the latest level, flow, and update time.
What this source covers
Open this river reading to check the latest level, flow, and update time.
What this source covers
Open this river reading to check the latest level, flow, and update time.
Access and land
Check public entry points, land rules, and seasonal access changes.
What this source covers
Open the land or access page, then check signs before you park or enter.
What this source covers
Open the land or access page, then check signs before you park or enter.
What this source covers
Open the land or access page, then check signs before you park or enter.
More helpful links
Use these links for stocking, safety, and other local details.
What this source covers
Open this page and check the latest safety advice before your trip.
What this source covers
Open this page and check the latest safety advice before your trip.
Quick answers
Quick North Platte River at Grey Reef answers.
What water does this North Platte at Grey Reef report cover?
The regulated tailwater from Gray Reef Dam toward Highway 220/Government Bridge, with two spring closure subreaches identified separately.
What should I check first before fishing North Platte at Grey Reef?
Check USBR GGWY discharge, Wyoming's 2026 rule, both April 1-May 15 closure boundaries, flushing notices, wind, and the exact launch or access.
Is access straightforward on North Platte at Grey Reef?
Official dam and BLM access exists, but Ledge Creek is watercraft-only and public/private bank markers still control downstream use.
Does the fishability score replace local judgment?
No. Use it as a starting decision, then confirm the source timestamp, official rules, alerts, water temperature, visibility, and conditions at the access you actually plan to use.