Brazos River Update


The Brazos River at the Richmond Gauge is currently at a depth (or stage) of 39.9 ft. After this past weekend’s rain, the National Weather Service’s Advanced Hydrologic Prediction Service forecasts the Brazos River rising to a depth of 47.4 ft at Richmond by Friday May 10, 2019. In addition, the National Weather Service forecasts a 40%-60% chance of rain every day next week, with a “slight” chance of severe thunderstorms predicted by the NWS Storm Prediction Center.

Predicted Impacts

Based on the forecast flood stage of 47.4 ft, the following impacts are anticipated:
29.8’ – Water is over bottom of South Pump Station flap gates.38.6’ – Water is over bottom of Pecan Lakes flap gates. 40.0’ – EDP close South Pump Station Sluice Gates43.6’ – Pecan Lakes Pump Station – Lead Pump On45.6’ – Pecan Lakes Pump Station – All Pumps On


Based on the approved PGMUD EAP, the following actions are warranted at this time:
With predicted flood stage over 40.0 ft, we are in Readiness Level 4 (“Routine Operations”). The Operator should perform the following:Check gates for debris and seepageCheck channel slope conditionsCheck interior lakes for elevation changesCheck fuel level in Generator Once actual flood stage exceeds 40.0 ft, PGMUD will enter Readiness Level 3 (“Precautionary Operations”). Per the EAP this Readiness Level will add the following tasks to the Level 4 list: Set up Staffing Plan for OperationsCheck Emergency CommunicationsNotify Board daily of current & forecast conditionsNotify Board daily of equipment/supplies available and equipment/supplies needed

We will continue to monitor the situation and should the conditions change we will update you accordingly.