Around here
Around Thunder Creek
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)
About this river
Thunder Creek is a 10.6 mile river. Streamflow is measured at the USGS gauge Thunder Creek near Newhalem, WA (site 12175500). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1931 to 2026
Thunder Creek typically runs highest in July, at a median 1,240 cfs, and lowest in February, at 166 cfs. The highest flow on record for any single day is 9,030 cfs, in 2004.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 188 | 135 to 293 |
| February | 166 | 121 to 250 |
| March | 178 | 139 to 250 |
| April | 296 | 225 to 411 |
| May | 789 | 569 to 1,180 |
| June | 1,210 | 923 to 1,595 |
| July | 1,240 | 1,020 to 1,550 |
| August | 950 | 780 to 1,140 |
| September | 576 | 415 to 712 |
| October | 330 | 224 to 501 |
| November | 288 | 195 to 454 |
| December | 224 | 161 to 360 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 95 years of record. Statistics published by the US Geological Survey for Thunder Creek near Newhalem, WA (site 12175500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Thunder Creek on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Thunder Creek's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
