How to Subscribe to Receive Alerts?(Registration required) Navigate to your nearest gage/site of interest. For gages outside of Harris County, select agency dropdown for more gage options. To subscribe to a single gage location: 1) Hover over site ID and click the link to subscribe to receive alerts for that gage. 2) Select default alerts available for water level and rainfall or create a custom water level alert by clicking “Add New”. To subscribe to multiple gage locations: 1) Scroll down to the bottom of the page and select default alerts available for water level and rainfall for one or more gage locations. 2) Select “subscribe” to start receiving alerts. Expand Map
Street Flooding Likely
(4.0 inches in 1 hour) : Street drainage is overwhelmed causing street flooding and dangerous driving conditions near the gage site.
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Flooding Likely
: Flooding of some structures and roads along stream near gage site. 
Flooding Possible
: Minimal or no property damage, but possibly some roadway flooding. The stream is generally near the top of its banks near the gage site. Flooding is typically over low lying areas near the stream, roads, parks, and trails.