Current & Recent Hydrologic Conditions

Hydrologic Data

Specific types of hydrologic data are analyzed and made available to the public within relatively short times after they are collected. As part of the Loudoun County Water Resources Monitoring Program, some of the data recently collected by county staff or by other agencies, such as the United States Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA), are incorporated into data management systems and presented graphically as shown through the web links below. Some of these recent data are considered "provisional" because they have not yet gone through the data collecting agency's full quality control process.

Reviewing these presentations of data will help provide you with an understanding of how our recent and current hydrologic conditions compare with historical conditions.

Precipitation

• USGS Real-Time Precipitation Map

Stream Flows

• Recent stream stage and discharge in Loudoun County (USGS)
• Streamflow Duration Hydrograph Goose Creek (USGS)
• Streamflow Duration Hydrograph Catoctin Creek (USGS)
• Potomac River stage at Point of Rocks, Maryland (NOAA)
• Monthly average stream flows in Virginia (USGS)

Groundwater

• United States Geological Survey Groundwater Data
• Locations of Loudoun County Groundwater Monitoring Wells (PDF)

Drought Conditions

• USGS Water Watch-Virginia (USGS)