Water Resources of Pennsylvania
The Delaware River Basin Streamflow Estimator Tool (DRB-SET) is a tool for the simulation of streamflow at a daily time step for an ungaged stream location in the Delaware River Basin. DRB-SET was developed by the U.S. Geological Survey (USGS) and funded through WaterSMART as part of the National Water Census, a USGS research program on national water availability and use that develops new water accounting tools and assesses water availability at the regional and national scales.
- Estimate baseline streamflow (minimally altered by regulation, diversion, or mining, and other anthropogenic activities) for ungaged streams in Pennsylvania
- Generate text file of daily mean streamflow for the ungaged site for the period 1960 to 2008
- Create a report that includes streamflow data, exceedance probabilities, basin characteristics, and hydrographs for the ungaged site
Flood Inundation Mapper
View maps of current and historic flood inundation
Baseline Streamflow Estimator (BaSE)
Estimate baseline streamflow for ungaged streams in Pennsylvania
Delaware River Basin Streamflow Estimator Tool (DRB-SET)
Software simulation of streamflow at a daily time step for an ungaged stream location in the Delaware River Basin
Delineate watersheds and estimate streamflow
- NWIS Mapper
View the locations of sites with USGS water data
Compare current streamflow to historical record
View stream-temperature and water-quality monitoring data
- Groundwater Watch
Compare current groundwater levels to historical record
- Groundwater Recharge
Compare aquifer recharge for 197 watersheds
Get condition updates by text message or email
The USGS Pennsylvania Water Science Center is your direct link to all kinds of water-resource information. Data collection and interpretive studies are done in cooperation with various local, State, and Federal agencies.
Streamflow, lake, reservoir, and precipitation data
Water levels in wells and other aquifer data
Chemical and biological quality data for surface water and groundwater
On-demand, current conditions for water data directly to your mobile phone or email. 2 ways to get started:
- Send a text message to WaterNow@usgs.gov containing the USGS Site Number of the gage you want to query
- Send an email message to WaterNow@usgs.gov where either the Subject or the first line of the message contains the USGS Site Number of the gage you want to query
Just What Is a 100-Year Flood Anyway?
Almost everyone has heard the term "100-year flood", but not everyone knows what it really means. A common question is, "we just had a 100-year flood a few years ago, why are we having another one so soon?" The USGS Office of Surface Water has released a poster that explains the concept, probabilistic nature, and inherent uncertainties of a 100-year flood. The poster, entitled "100-Year Flood—It's All About Chance," can be found at http://pubs.usgs.gov/gip/106/.