Big Lost River near Arco ID
Is Big Lost River near Arco ID flooding right now?
Big Lost River near Arco ID measured 2.01 ft on 2026-09-11 01:00:00 UTC. That observation was 4.5 ft below its 6.5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
2.01 ft
Streamflow
—
Minor flooding here begins at 6.5 ft. The highest crest on record was 7.68 ft on Wed, Jul 5, 1967.
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 5.5 ft | 3.5 ft below |
| Minor flood | 6.5 ft | 4.5 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 7.68 ft | 1967-07-05 |
| 7.32 ft | 1983-07-12 |
| 7.26 ft | 1986-06-09 |
| 7.1 ft | 1997-06-14 |
| 6.86 ft | 1982-07-02 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Big Lost River at Arco at Sunset Road ID | 4.8 mi | Butte County |
| Inl Diversion at Head near Arco ID | 10.5 mi | Butte County |
| Big Lost River below Inl Div near Arco ID | 10.5 mi | Butte County |
| Inl Div at Outlet of Spreading Area a near Arco ID | 11.5 mi | Butte County |
| Big Lost River below Moore Div near Moore ID | 14.7 mi | Butte County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.