USGS Streamgage 06343000
Heart River near South Heart, ND
Heart River near South Heart, ND is USGS streamgage 06343000 in North Dakota, monitoring river discharge in hydrologic subbasin 10130202. It drains a watershed of about 311 square miles. Discharge records at this site go back to 1946. Typical flow runs near 1.3 cfs in July and 6.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- North Dakota
- Drainage area
- 311 sq mi
- Gauge elevation
- 2,452 ft
- Subbasin (HUC-8)
- 10130202
- Coordinates
- 46.86556, -102.94806
- USGS site number
- 06343000
- Records begin
- 1946-07-01 (80 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 80 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 | 0.1 | 0.4 | 1.2 | |
| February | 0.2 | 0.6 | 38.2 | |
| March | 0.5 | 6.1 | 325.9 | |
| April | 0.8 | 6.2 | 262.9 | |
| May | 0.4 | 2.4 | 70 | |
| June | 0.4 | 2.6 | 75.3 | |
| July | 0.2 | 1.3 | 22.7 | |
| August | 0.1 | 0.6 | 7 | |
| September | 0.1 | 0.6 | 4 | |
| October | 0.2 | 0.6 | 9 | |
| November | 0.3 | 0.6 | 1.4 | |
| December | 0.2 | 0.6 | 1.3 |
All values in cubic feet per second (cfs).
Common questions
- When does Heart River near South Heart, ND normally run highest?
- April, on the long-term record. The median daily flow that month is about 6.2 cfs, against 0.4 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 South Heart, ND?
- It depends on the month. In January, half of days historically fall near 0.4 cfs, with the middle 80% of days between 0.1 and 1.2 cfs. The month-by-month table on this page gives the full range.
- How long has Heart River near South Heart, ND been measured?
- Discharge records at USGS site 06343000 begin in 1946, about 80 years, covering roughly 3,418 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Heart River near South Heart, ND?
- The gauge sits at 46.86556, -102.94806, in North Dakota, in hydrologic subbasin 10130202, at an elevation of about 2,452 feet, draining roughly 311 square miles.
- Can I use Heart River near South Heart, 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.