USGS Streamgage 06607200
Maple River at Mapleton, IA
Maple River at Mapleton, IA is USGS streamgage 06607200 in Iowa, monitoring river discharge in hydrologic subbasin 10230005. It drains a watershed of about 669 square miles. Discharge records at this site go back to 1941. Typical flow runs near 287.6 cfs in July and 264.1 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
Gauge details
- State
- Iowa
- Drainage area
- 669 sq mi
- Gauge elevation
- 1,114 ft
- Subbasin (HUC-8)
- 10230005
- Coordinates
- 42.15678, -95.81028
- USGS site number
- 06607200
- Records begin
- 1941-10-01 (85 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Maple River at Mapleton, IA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 190 | 205 | 224 | ||
| 163 | 184 | 216 | ||
| 145 | 167 | 203 | ||
| 141 | 169 | 255 | ||
| 135 | 176 | 331 | ||
| 149 | 256 | 663 | ||
| 171 | 352 | 954 | ||
| 223 | 485 | 1,181 | ||
| 240 | 494 | 1,090 | ||
| 227 | 450 | 944 | ||
| 206 | 389 | 795 | ||
| 179 | 323 | 669 | ||
| 163 | 279 | 563 | ||
| 149 | 244 | 484 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 85 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 | 16.3 | 69.8 | 306.5 | |
| February | 20.7 | 127.8 | 596.6 | |
| March | 59.6 | 238.9 | 1,039.1 | |
| April | 66.2 | 264.1 | 876.9 | |
| May | 63.5 | 311.2 | 1,051.3 | |
| June | 82.8 | 407 | 1,357.6 | |
| July | 65.9 | 287.6 | 817.8 | |
| August | 41.8 | 172.3 | 573.4 | |
| September | 30 | 118.6 | 468.5 | |
| October | 32.9 | 106.7 | 498 | |
| November | 36.5 | 109.3 | 410 | |
| December | 24.3 | 90.4 | 345.5 |
All values in cubic feet per second (cfs).
Common questions
- When does Maple River at Mapleton, IA normally run highest?
- June, on the long-term record. The median daily flow that month is about 407 cfs, against 69.8 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 Maple River at Mapleton, IA?
- It depends on the month. In January, half of days historically fall near 69.8 cfs, with the middle 80% of days between 16.3 and 306.5 cfs. The month-by-month table on this page gives the full range.
- How long has Maple River at Mapleton, IA been measured?
- Discharge records at USGS site 06607200 begin in 1941, about 85 years, covering roughly 9,199 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Maple River at Mapleton, IA?
- Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
- Where is Maple River at Mapleton, IA?
- The gauge sits at 42.15678, -95.81028, in Iowa, in hydrologic subbasin 10230005, at an elevation of about 1,114 feet, draining roughly 669 square miles.
- Can I use Maple River at Mapleton, IA 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.