River Floods near Clearlake
Right now
The most recent data we hold from USGS Water Services arrived 26 hours ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by USGS Water Services today.
It is the only one we have recorded within 20 km of this point since 28 August 2026.
What the source measured
USGS Water Services reported: Flood Impact Statement from National Weather Service (CNRFC) NWS ID: KCVC1 "Overtopping occurs just upstream of the gage and canyon" | Gage height: 1479.35 ft | Ref. point: 13.10 ft
An estimated 16,941 people live within 50 km of this point.
How we know
One source: USGS Water Services. Not yet confirmed by a second, independent source.
Our own score for this event is 56 out of 100, at 69 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | River Floods |
| Severity | Critical |
| Calamity Score (ours) | 56 / 100 |
| Our confidence | 69% |
| Coordinates | 38.9286, -122.8437 |
| Nearest City | Clearlake (19 km) |
| Population Exposed | 16.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T05:19:41.305Z |
| Source | https://waterdata.usgs.gov/monitoring-location/11449500/ |
Score Breakdown
Technical Details
| SiteNo | 11449500 |
| StationName | KELSEY C NR KELSEYVILLE CA |
| FloodCategory | major_flooding |
| GageHeight | 1479.35 |
| RpElevation | 13.1 |
| RpName | BANK |
| NwsId | KCVC1 |
| StateCode | CA |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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