The map at the left displays stations frequently monitored by the DGS for current and long-term hydrologic conditions throughout Delaware. These include weather stations, stream gages, and groundwater wells in unconfined and confined aquifers. Data from most of the stations are collected monthly. See a full list of stations at the bottom of this page.
For each station, you can view long-term monthly data for the period of record. Click on the marker on the map (or the name of the station from the list below) to learn more.
For more information, please read: Delaware Geological Survey - US Geological Survey Stream and Tide Gaging Program.