Bill Williams River Flow Today
As of November 12, 2026 at 12:55 AM, the Bill Williams River is flowing at 4,070 cfs below Alamo Dam, AZ and down 4% in 24 hours. 2 of 2 USGS gauges reported in the last 3 days; flows range from 3.8 to 4,070 cfs. ❤ Favorite
Bill Williams River map
See the Bill Williams River on a live map
Every gauge, dam and paddle run on the river, one tap each:
- Gauges now — which reaches are high or low
- Dams & paddle runs — storage and what’s in range
- Rain — past 24 hrs and the 72-hr forecast, press play
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Bill Williams River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Alamo Dam, the Bill Williams River is running 4,070 cfs, down 4% since yesterday. Along the river, 1 of 1 reporting gauges are below normal (the typical gauge is at 40% of normal).
Paddlers: 3 of 3 runs on the Bill Williams River with a live range are in range.
How the Bill Williams River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Alamo Dam975 ft 4,070 cfs
- Parker521 ft 3.8 cfs40%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Bill Williams River streamgauge, placed by its own percent of normal. The line is the typical gauge (40%).
Bill Williams River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | Elevation |
|---|---|---|---|---|---|
|
Bill Williams River Below Alamo Dam AZ
Nov 12, 12:55 AM · USGS 09426000 |
4,070 cfs | · | -4% | 17.24 ft | 975 ft |
|
Bill Williams River Near Parker AZ
Nov 12, 12:30 AM · USGS 09426620 |
3.8 cfs | 40% | 0% | 2.02 ft | 521 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Paddle runs on the Bill Williams River
3 of 3 runs are in range right now. Each run is checked against its runnable range using the gauge it is keyed to (or the nearest gauge on this river).
| Run | Status | Flow now | Runnable range | Class |
|---|---|---|---|---|
| Bill Williams River Gauge: Alamo Dam |
In range | 4,070 cfs | 200–5,000 cfs | III |
| Bill Williams River Gauge: Alamo Dam |
In range | 4,070 cfs | 200–5,000 cfs | II–III |
| Bill Williams River Gauge: Alamo Dam |
In range | 4,070 cfs | 200–5,000 cfs | II–III |
Dams & reservoirs on the Bill Williams River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Bill Williams River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Bill Williams River
The Bill Williams River is a 46-mile-long tributary of the Colorado River in western Arizona. It is named after mountain man Bill Williams, who explored the area in the early 19th century. The river flows through the Bill Williams National Wildlife Refuge and the Lake Havasu National Wildlife Refuge before joining the Colorado River near Lake Havasu City.
The Bill Williams River is fed by several tributaries and is regulated by several dams and reservoirs, including the Alamo Dam and Reservoir, which provides water for agriculture and recreation. The river also supports recreational activities such as boating, fishing, and camping, and provides habitat for a variety of wildlife, including the endangered southwestern willow flycatcher. In recent years, efforts have been made to restore and protect the Bill Williams River and its ecosystem.
About the Bill Williams River
How is the Bill Williams River flowing right now?
As of November 12, 2026, the Bill Williams River is flowing at 4,070 cfs below Alamo Dam, AZ. Across its 2 USGS gauges, current flows range from 3.8 to 4,070 cfs. Every gauge’s live reading is in the table above.
Is the Bill Williams River running high or low?
The typical gauge on the Bill Williams River is at 40% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
Is the Bill Williams River runnable for paddling today?
3 of 3 paddle runs are in range right now. Each run in the paddle table is checked against its runnable range using its gauge's live flow.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.