USGS Streamgage 06461500
Niobrara River near Sparks, Nebr.
Niobrara River near Sparks, Nebr. is USGS streamgage 06461500, monitoring river discharge in hydrologic subbasin 10150004. It drains a watershed of about 7,150 square miles. Discharge records at this site go back to 1945. Typical flow runs near 611.8 cfs in July and 921.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 7,150 sq mi
- Gauge elevation
- 2,301 ft
- Subbasin (HUC-8)
- 10150004
- Coordinates
- 42.90208, -100.36253
- USGS site number
- 06461500
- Records begin
- 1945-10-01 (81 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 81 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 | 574.9 | 809.3 | 1,026.4 | |
| February | 688.1 | 891.3 | 1,152.8 | |
| March | 738.7 | 965.3 | 1,318.7 | |
| April | 709.1 | 921.6 | 1,222.3 | |
| May | 658.7 | 895.7 | 1,327.4 | |
| June | 583.7 | 792.4 | 1,191.7 | |
| July | 429.7 | 611.8 | 851.5 | |
| August | 431.7 | 555.1 | 755.8 | |
| September | 455.3 | 564.8 | 778.9 | |
| October | 518.5 | 643.3 | 861.9 | |
| November | 580.9 | 793.5 | 961.1 | |
| December | 590.8 | 807.6 | 999.6 |
All values in cubic feet per second (cfs).