Hubbard Brook Experimental Forest (USDA Forest Service): Daily Streamflow by Watershed, 1956 - present

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. Gage height is converted to streamflow
rate by calibration factors and then integrated to generate
daily streamflow. Streamflow rate is measured as volume per
unit time(L/s) and is proportional to the watershed
area.
Beginning January 1, 2013, instantaneous streamflow
data (and derived daily streamflow) 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. Daily streamflow data are derived from the
instantaneous streamflow record, and additional information
(quality control flagging and gapfilling) can be found in
that record
http://data.hubbardbrook.org/data/dataset.php?id=1
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.