Recent flow
Discharge
Latest reading: 1,390 cfs. Falling over about 6 hours. Chart covers Sep 4 through Sep 11; readings are provisional and may be revised.

Photo: Bureau of Land Management Oregon and Washington Opens in a new tab. · CC BY 2.0
Water temperature is unconfirmed. Use a stream thermometer; stop trout fishing at 70°F or warmer, or sooner if fish show stress.
Rating updatedRiver local time:
USGS shows 1,390 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1934-2025, 92 readings) show a median near 1,800 cfs and the lower quartile near 1,410 cfs; today's flow is below normal for the date. This is below normal, so edge depth, temperature, and pressure matter.
NWS air forecast near
This is an air forecast, not a river-temperature reading. Check the water with a stream thermometer before fishing in hot weather.
Discharge
Latest reading: 1,390 cfs. Falling over about 6 hours. Chart covers Sep 4 through Sep 11; readings are provisional and may be revised.
Mostly Cloudy
The National Weather Service forecast is temporarily unavailable.
Current U.S. Geological Survey gauge: Yakima River at Umtanum
Seasonal starting points, not a live hatch report. Match what you see on the water.
Each fly name opens its matching Fly Box guide.
The best Yakima days match stable flow, trout-safe temperatures, and a clear access plan. Wind and irrigation changes can matter as much as the hatch.
Best for matching dries, nymphs, and float speed.
Float planning improves, but wading can become unsafe.
Use longer leaders, smaller flies, and careful bank approaches.
Fish early, check temperature, and stop trout handling when water is stressful.
Wading and Floating have the same top score. Use current access, footing, weather, and local rules to choose.
Wading is in play only where your chosen access has clear footing, legal entry, and no forced crossings.
This report does not recommend bank fishing on this reach.
A float is in play where this report supports boat access and wind, releases, and shuttle logistics are manageable.
Is Yakima River worth the trip today? Check flow, weather, hatches, access, and rules for Washington before you go.
The Yakima is the most straightforward trout report in this Washington group, but it still needs current flow, temperature, and WDFW rule checks. Use Umtanum for canyon flow and match the day to hatches, wind, and safe access.
USGS shows 1,390 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1934-2025, 92 readings) show a median near 1,800 cfs and the lower quartile near 1,410 cfs; today's flow is below normal for the date. This is below normal, so edge depth, temperature, and pressure matter.
Fall: October caddis, BWOs, and streamer windows improve as water cools.
The current NWS air forecast is about 62F, and the next 24-hour high reaches about 72F. Mostly Cloudy.
No active NWS alert was returned for this forecast point.
Skip or shorten the Yakima when flow changes make the chosen wade unsafe, when wind turns a float into a control problem, when summer heat threatens trout recovery, or when salmon-related rules create confusion outside the trout plan.
Use USGS 12484500 at Umtanum as the core canyon trend. Stable moderate flows are the easiest fit. High irrigation water favors experienced floats and edge tactics, while very low or warm water should shift the plan to dawn, shade, or another option.
Skip or shorten the Yakima when flow changes make the chosen wade unsafe, when wind turns a float into a control problem, when summer heat threatens trout recovery, or when salmon-related rules create confusion outside the trout plan.
Pick the access style first: Umtanum for a canyon base, BLM recreation sites for bank and launch planning, or upper trout water only after matching flows to the reach. Then choose dries, nymphs, or streamers based on the hatch window.
If the Yakima is too high, too warm, or too windy, compare the Wenatchee only after rule checks, the Spokane for an eastern Washington redband option, or the Missouri as a larger tailwater-style trout benchmark.
Use these places as starting points. Open the access link below and check posted signs before you park or enter.
Check WDFW rules and emergency rules before fishing the Yakima, especially for trout reaches, salmon closures, selective gear, temperature, and access rules.
Core canyon access and the primary flow-reference area.
Common canyon float and wade planning references.
Different flow and access character. Check reach rules first.
Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.
Check what is allowed, where the rule applies, and whether the river is open.
Check the latest river reading and forecast before you leave.
Check public entry points, land rules, and seasonal access changes.
Check what is allowed, where the rule applies, and whether the river is open.
Open the current rules and check the river section, season, and special limits.
Open the current rules and check the river section, season, and special limits.
Open the current rules and check the river section, season, and special limits.
Check the latest river reading and forecast before you leave.
Open this page and check the latest safety advice before your trip.
Open this river reading to check the latest level, flow, and update time.
Check public entry points, land rules, and seasonal access changes.
Open the land or access page, then check signs before you park or enter.
Open the land or access page, then check signs before you park or enter.
What was checked: This report is maintained from current regulation, access, flow, weather, and public planning sources so anglers can make better trip decisions than a raw gauge or generic overview would allow.
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.
WDFW rules, Umtanum flow, irrigation changes, water temperature, wind, and canyon access
Use USGS 12484500 Yakima River at Umtanum for the canyon float and wade decision.
Start with Umtanum, Bighorn, Lmuma, Roza, or Cle Elum after matching the plan to current flow.
Yes in many canyon reaches at suitable flows, but irrigation releases and slick rocks can make wading unsafe.