USGS Streamgage 12141300
Middle Fork Snoqualmie River near Tanner, WA
Middle Fork Snoqualmie River near Tanner, WA is USGS streamgage 12141300 in Washington, monitoring river discharge in hydrologic subbasin 17110010. It drains a watershed of about 154 square miles. Discharge records at this site go back to 1961. Typical flow runs near 676.7 cfs in July and 1,111 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 154 sq mi
- Gauge elevation
- 790 ft
- Subbasin (HUC-8)
- 17110010
- Coordinates
- 47.48591, -121.64786
- USGS site number
- 12141300
- Records begin
- 1961-02-01 (65 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 65 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 426 | 957.9 | 3,517.4 | |
| February | 395.9 | 825.7 | 2,596.2 | |
| March | 460.9 | 848.3 | 1,960.6 | |
| April | 673 | 1,111 | 2,357.7 | |
| May | 1,013.4 | 1,621 | 3,119.7 | |
| June | 818 | 1,550.7 | 3,015.7 | |
| July | 375.9 | 676.7 | 1,699.4 | |
| August | 171.7 | 262 | 761 | |
| September | 137.9 | 254.1 | 939.6 | |
| October | 172.2 | 562.5 | 2,170.5 | |
| November | 444.8 | 1,096 | 3,569.3 | |
| December | 451 | 940.9 | 3,436.8 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- NF Snoqualmie River near Snoqualmie Falls, WA
- North Fork Snoqualmie River near North Bend, WA
- SF Snoqualmie River Ab Alice Creek near Garcia, WA
- SF Snoqualmie River at Edgewick, WA
- Boxley Creek near Cedar Falls, WA
- Boxley Creek near Edgewick, WA
- SF Snoqualmie River at North Bend, WA
- Snoqualmie River near Snoqualmie, WA