Hydrologic Service Areas


Hydrologic Service Areas (HSAs) are geographical areas within which a specific NWS Weather Service Forecast Office (WFO) has hydrologic responsibilities. These responsibilities include maintaining data observing and collecting points, monitoring and forecasting for heavy rains that cause floods, the issuance of flood watches and warnings for site-specific locations within their HSAs, and the coordination of critical information to public, government officials, and other water management agencies.


River Forecast Centers


River Forecast Centers (RFCs) issue stage and crest forecasts to the local NWS Offices. The local offices then use this information to issue flood warnings and statements for specific forecast points within their HSAs. There are 13 RFCs nationwide, 4 within the Southern Region. Besides issuing river forecasts, the RFCs are involved with radar and rainfall observation quality control and product mosaicing, model calibration, local procedure development, and coordination with other government agencies.

Southern Region Hydrologic Service Areas
Albuquerque Amarillo Atlanta
Birmingham Brownsville Corpus Christi
El Paso Fort Worth Houston
Jackson Jacksonville Morristown
Lake Charles Little Rock Lubbock
Melbourne Memphis Miami
Midland Mobile Nashville
New Orleans Norman San Antonio
San Angelo San Juan Shreveport
Tallahassee Tampa Tulsa
Southern Region River Forecast Centers
West Gulf RFC Arkansas/Red River RFC
Lower Mississippi RFC Southeast RFC


Return to Hydrologic Services Branch Page

created by Kandis Boyd
last update: August 16 2000