Streamflow at 9 watersheds within the Hubbard Brook Experimental Forest has been measured continuously from as early as 1955. Streams are gaged with V-notch weirs at the outlet of each watershed. Height of water behind the weir increases with increased streamflow and is recorded by means of a float attached mechanically to a pen on a spring-wound strip-chart recorder. For each day, 2 to 130 points on the chart trace are digitized, depending on the rate of change of flow. Gage heights are converted to streamflow rate by calibration and conversion factors. There is a discharge value for every digitized point.
Beginning January 1, 2013, instantaneous streamflow data are measured by electronic sensors, and data are provisional as the transition from chart to digital data collection is still under evaluation. Data may be updated before they are finalized. Please contact the dataset creator prior to data use/publication.
These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.