USGS Streamgage 06815000
Big Nemaha River at Falls City, Nebr.
Big Nemaha River at Falls City, Nebr. is USGS streamgage 06815000, monitoring river discharge in hydrologic subbasin 10240008. It drains a watershed of about 1,339 square miles. Discharge records at this site go back to 1941. Typical flow runs near 203.5 cfs in July and 256.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 1,339 sq mi
- Gauge elevation
- 900 ft
- Subbasin (HUC-8)
- 10240008
- Coordinates
- 40.03552, -95.59576
- USGS site number
- 06815000
- Records begin
- 1941-06-10 (85 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 82 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 | 45.8 | 112.2 | 416.5 | |
| February | 58.6 | 163.6 | 750.4 | |
| March | 63.3 | 225.5 | 1,643.5 | |
| April | 68.2 | 256.3 | 1,606.9 | |
| May | 67.8 | 354.9 | 2,703.9 | |
| June | 62.8 | 341.4 | 2,655.7 | |
| July | 40.2 | 203.5 | 1,441.5 | |
| August | 27.5 | 128.6 | 757 | |
| September | 25.1 | 102.2 | 899.2 | |
| October | 30.4 | 99.7 | 672.6 | |
| November | 42.7 | 117.2 | 409.6 | |
| December | 42.8 | 111.1 | 349.9 |
All values in cubic feet per second (cfs).