USGS Streamgage 06429997
Murray Ditch above Headgate at Wy-Sd State Line
Murray Ditch above Headgate at Wy-Sd State Line is USGS streamgage 06429997 in South Dakota, monitoring river discharge in hydrologic subbasin 10120203. Discharge records at this site go back to 1987. Typical flow runs near 9.8 cfs in July and 0 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- South Dakota
- Gauge elevation
- 3,453 ft
- Subbasin (HUC-8)
- 10120203
- Coordinates
- 44.57639, -104.05556
- USGS site number
- 06429997
- Records begin
- 1987-04-23 (39 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 39 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 | 0 | 0 | 0 | |
| February | 0 | 0 | 0 | |
| March | 0 | 0 | 0 | |
| April | 0 | 0 | 2 | |
| May | 0 | 0 | 8.5 | |
| June | 0 | 2.6 | 14.2 | |
| July | 0 | 9.8 | 18.5 | |
| August | 0 | 8.3 | 16.3 | |
| September | 0.1 | 6.1 | 14.6 | |
| October | 0 | 2.5 | 11.2 | |
| November | 0 | 0 | 0.9 | |
| December | 0 | 0 | 0 |
All values in cubic feet per second (cfs).
Common questions
- When does Murray Ditch above Headgate at Wy-Sd State Line normally run highest?
- July, on the long-term record. The median daily flow that month is about 9.8 cfs, against 0 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Murray Ditch above Headgate at Wy-Sd State Line?
- It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 0 cfs. The month-by-month table on this page gives the full range.
- How long has Murray Ditch above Headgate at Wy-Sd State Line been measured?
- Discharge records at USGS site 06429997 begin in 1987, about 39 years, covering roughly 9,194 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Murray Ditch above Headgate at Wy-Sd State Line?
- The gauge sits at 44.57639, -104.05556, in South Dakota, in hydrologic subbasin 10120203, at an elevation of about 3,453 feet.
- Can I use Murray Ditch above Headgate at Wy-Sd State Line data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.