USGS Streamgage 11509500
Klamath River at Keno, OR
Klamath River at Keno, OR is USGS streamgage 11509500 in Oregon, monitoring river discharge in hydrologic subbasin 18010206. It sits on the Klamath River, alongside 12 other gauges Rivermatics tracks on the same river. It drains a watershed of about 3,920 square miles. Discharge records at this site go back to 1904. Typical flow runs near 635.5 cfs in July and 1,619 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, alongside daily high and low water-temperature forecasts.
View live conditions & forecast →
Gauge details
- State
- Oregon
- Drainage area
- 3,920 sq mi
- Gauge elevation
- 3,961 ft
- Subbasin (HUC-8)
- 18010206
- Coordinates
- 42.1332, -121.96223
- USGS site number
- 11509500
- Records begin
- 1904-06-01 (122 years)
- Rivermatics forecast
- 14-day flow outlook + water temperature
14-day flow forecast
Based on observations through for Klamath River at Keno, OR. 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 |
|---|---|---|---|---|
| 741 | 759 | 777 | ||
| 740 | 768 | 811 | ||
| 737 | 774 | 852 | ||
| 729 | 773 | 923 | ||
| 723 | 772 | 955 | ||
| 716 | 771 | 970 | ||
| 709 | 769 | 989 | ||
| 703 | 768 | 1,004 | ||
| 698 | 767 | 1,009 | ||
| 691 | 767 | 1,029 | ||
| 685 | 766 | 1,006 | ||
| 679 | 765 | 983 | ||
| 673 | 761 | 1,020 | ||
| 667 | 761 | 1,037 |
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 122 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 | 548.7 | 1,316.8 | 3,048.4 | |
| February | 475.6 | 1,328.6 | 4,012.1 | |
| March | 481.3 | 1,679.7 | 5,453.5 | |
| April | 464.1 | 1,619 | 4,914.7 | |
| May | 436.7 | 1,184 | 3,567.7 | |
| June | 304.2 | 796.1 | 2,447.3 | |
| July | 268.8 | 635.5 | 1,506.1 | |
| August | 408.5 | 747.6 | 1,544.2 | |
| September | 526.9 | 982.4 | 1,710 | |
| October | 634.5 | 1,107.7 | 2,070.6 | |
| November | 629.7 | 1,233.7 | 2,588.3 | |
| December | 564.7 | 1,369.4 | 2,969.4 |
All values in cubic feet per second (cfs).
Common questions
- When does Klamath River at Keno, OR normally run highest?
- March, on the long-term record. The median daily flow that month is about 1,679.7 cfs, against 635.5 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Klamath River at Keno, OR?
- It depends on the month. In January, half of days historically fall near 1,316.8 cfs, with the middle 80% of days between 548.7 and 3,048.4 cfs. The month-by-month table on this page gives the full range.
- How long has Klamath River at Keno, OR been measured?
- Discharge records at USGS site 11509500 begin in 1904, about 122 years, covering roughly 9,131 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Klamath River at Keno, OR?
- 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. A companion model forecasts each day's water-temperature high and low. 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 Klamath River at Keno, OR?
- The gauge sits at 42.1332, -121.96223, in Oregon, in hydrologic subbasin 18010206, at an elevation of about 3,961 feet, draining roughly 3,920 square miles.
- Can I use Klamath River at Keno, OR 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 Klamath River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Klamath River in full.
- Klamath River at Keno, OR this page
- Klamath River below John C.Boyle Pwrplnt, near Keno, OR 4,080 sq mi
- Klamath River below Iron Gate Dam, CA 4,630 sq mi
- Klamath River near Seiad Valley, CA 6,940 sq mi
- Klamath River Ab Fall C near Copco, CA 8,000 sq mi
- Klamath River near Klamath, CA 12,100 sq mi
- Klamath River above Keno Dam, at Keno - Bottom
- Klamath River above Keno Dam, at Keno, OR
- Klamath River at Miller Island Boat Ramp-Bottom
- Klamath River at Miller Island Boat Ramp, OR
- Klamath River at Miller Island, near Midland, OR
- Klamath River below Keno Dam, at Keno, OR
- Klamath River near Klamath Falls, OR