Cedar Bayou watershed water levels
6 Harris County Flood Warning System gauges on 2 streams · readings as published
When this page was generated (Oct 20, 2026 at 10:50 AM CDT), the gauge in this watershed with the least distance to its top of bank was Cedar Bayou at SH 99, at 3.1 ft below top of bank.
Cedar Bayou
Ordered by water surface elevation, highest first, which generally runs upstream to downstream.
| Crossing | Level | Below bank | 7-day closest | Updated |
|---|---|---|---|---|
| FM 1960 | 55.99 ft | 14.7 ft | 14.7 ft | 4 hours ago |
| US 90 | 36.49 ft | 16.9 ft | 16.9 ft | 3 hours ago |
| FM1942 | 2.57 ft | 23.2 ft | 22.5 ft | 51 minutes ago |
| SH 146 | 1.97 ft | 3.8 ft | 3.0 ft | 17 minutes ago |
| SH 99 | 1.86 ft | 3.1 ft | 2.3 ft | 16 minutes ago |
Smith Gully
| Crossing | Level | Below bank | 7-day closest | Updated |
|---|---|---|---|---|
| SH146 | 10.14 ft | 17.1 ft | 16.8 ft | 27 hours ago |
USGS gauges in this watershed
- Cedar Bayou at I-10 near Mont Belvieu: 2.14 ft gage height, 10.9 ft below minor flood stage
- Cedar Bayou near Crosby: 36.50 ft gage height, 16.9 ft below minor flood stage
How to read these numbers
Level is the water surface elevation above mean sea level, not a depth, so it is only comparable between readings at the same gauge. Below bank is the distance between that elevation and the top of the channel at that crossing, using the reference Harris County publishes with each reading. Closest in 7 days is the smallest that distance has been, from hourly averages over the last week. Each gauge page has the full history.