USGS Streamgage 06345500
Heart River near Richardton, ND
Heart River near Richardton, ND is USGS streamgage 06345500 in North Dakota, monitoring river discharge in hydrologic subbasin 10130202. It drains a watershed of about 1,250 square miles. Discharge records at this site go back to 1903. Typical flow runs near 21.7 cfs in July and 61.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- North Dakota
- Drainage area
- 1,250 sq mi
- Gauge elevation
- 2,181 ft
- Subbasin (HUC-8)
- 10130202
- Coordinates
- 46.74556, -102.30833
- USGS site number
- 06345500
- Records begin
- 1903-06-01 (123 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 123 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 | 0.6 | 5.1 | 20 | |
| February | 0.5 | 8 | 92.7 | |
| March | 7.4 | 55.2 | 909.5 | |
| April | 15.8 | 61.5 | 754.8 | |
| May | 7.7 | 31.7 | 213.7 | |
| June | 7.3 | 38.5 | 304.1 | |
| July | 4 | 21.7 | 141.5 | |
| August | 0.6 | 9.9 | 49.5 | |
| September | 0.7 | 8.3 | 29.6 | |
| October | 2 | 11.3 | 38.6 | |
| November | 4 | 12.3 | 32.4 | |
| December | 2.2 | 8.5 | 22.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Heart River near Richardton, ND normally run highest?
- April, on the long-term record. The median daily flow that month is about 61.5 cfs, against 5.1 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 Heart River near Richardton, ND?
- It depends on the month. In January, half of days historically fall near 5.1 cfs, with the middle 80% of days between 0.6 and 20 cfs. The month-by-month table on this page gives the full range.
- How long has Heart River near Richardton, ND been measured?
- Discharge records at USGS site 06345500 begin in 1903, about 123 years, covering roughly 9,123 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Heart River near Richardton, ND?
- The gauge sits at 46.74556, -102.30833, in North Dakota, in hydrologic subbasin 10130202, at an elevation of about 2,181 feet, draining roughly 1,250 square miles.
- Can I use Heart River near Richardton, ND 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.