USGS Streamgage 14013000
Mill Creek near Walla Walla, WA
Mill Creek near Walla Walla, WA is USGS streamgage 14013000 in Washington, monitoring river discharge in hydrologic subbasin 17070102. It sits on the Mill Creek, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 60 square miles. Discharge records at this site go back to 1913. Typical flow runs near 34.2 cfs in July and 149.4 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
Gauge details
- State
- Washington
- Drainage area
- 60 sq mi
- Subbasin (HUC-8)
- 17070102
- Coordinates
- 46.00789, -118.11856
- USGS site number
- 14013000
- Records begin
- 1913-10-01 (113 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Mill Creek near Walla Walla, WA. 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 |
|---|---|---|---|---|
| 30.4 | 31.7 | 33.5 | ||
| 29.4 | 31.6 | 34.1 | ||
| 33.1 | 39.2 | 54.1 | ||
| 33 | 38.6 | 49.5 | ||
| 30.9 | 34.8 | 41 | ||
| 29.8 | 33.6 | 39 | ||
| 28.9 | 32.7 | 37.7 | ||
| 28.2 | 32.1 | 37 | ||
| 27.6 | 31.5 | 36.1 | ||
| 27.1 | 31.2 | 35.8 | ||
| 27 | 31.1 | 35.9 | ||
| 26.7 | 30.8 | 35.5 | ||
| 26.6 | 30.8 | 35.7 | ||
| 26.3 | 30.6 | 35.4 |
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 113 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 | 41.3 | 84.7 | 275 | |
| February | 51.5 | 104 | 302.6 | |
| March | 64.3 | 133.3 | 307.1 | |
| April | 83.9 | 149.4 | 304.8 | |
| May | 63.7 | 116.5 | 234.1 | |
| June | 35.4 | 59.9 | 138.5 | |
| July | 26.1 | 34.2 | 50.6 | |
| August | 23.4 | 29.7 | 40.2 | |
| September | 23.8 | 30.1 | 42 | |
| October | 25.2 | 34.1 | 54.8 | |
| November | 29.9 | 52.2 | 129.7 | |
| December | 35.4 | 73.8 | 217.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Mill Creek near Walla Walla, WA normally run highest?
- April, on the long-term record. The median daily flow that month is about 149.4 cfs, against 29.7 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Mill Creek near Walla Walla, WA?
- It depends on the month. In January, half of days historically fall near 84.7 cfs, with the middle 80% of days between 41.3 and 275 cfs. The month-by-month table on this page gives the full range.
- How long has Mill Creek near Walla Walla, WA been measured?
- Discharge records at USGS site 14013000 begin in 1913, about 113 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Mill Creek near Walla Walla, WA?
- 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 Mill Creek near Walla Walla, WA?
- The gauge sits at 46.00789, -118.11856, in Washington, in hydrologic subbasin 17070102, draining roughly 60 square miles.
- Can I use Mill Creek near Walla Walla, WA 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.
Upstream and downstream on the Mill Creek
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Mill Creek in full.
- Mill Creek near Walla Walla, WA this page
- Mill Creek at Five Mile Rd Br near Walla Walla, WA 93 sq mi
- Mill Creek at Walla Walla, WA 96 sq mi
- Mill Creek at Last Chance Rd Br near College Place, WA