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USGS gaged daily discharge from the Parker River at Byfield, Massachusetts (Station 01101000), draining 55.1637 km2 of watershed. Data are used for determining freshwater flows into the Plum Island Sound Estuary, MA.
USGS gaged daily discharge from the Parker River at Byfield, Massachusetts (Station 01101000), draining 55.1637 km2 of watershed. Data are used for determining freshwater flows into the Plum Island Sound Estuary, MA.
Time series of nutrient grab samples collected by hand (i.e. not with the Sigma autosampler) with frequency ranging from weekly to monthly between 2001 and 2016. Sites include three headwater catchments of contrasting land use (forest, urban, wetland), and the mouth of the two main watersheds draining to the Plum Island Estuary (Ipswich and Parker R.). An additional time series was collected for a site in the Upper Ipswich at North Reading and at Fish Br. in Boxford – this sampling was ended in 2002. All Samples were analysed for NO3, NO2, NH4, PO4, TDN and DOC. Si was analyzed until 2002.
Multi-year data of water chemistry including nutrient concentrations for various forms of N, P, C, as well as suspended sediments, was determined from monthly grab samples taken at watershed inputs to the Plum Island Sound Estuary. Sampling sites were the Ipswich River (Sylvania Dam, Ipswich, MA), Parker River Dam (Central St, Newbury, MA), Egypt River (Ipswich, MA) Mill River (Newbury, MA), Muddy Run (Ipswich, MA), Little River (Newbury, MA).
Nutrient concentrations for various forms of N, P, C, as well as suspended sediments, are determined from monthly grab samples taken at the Ipswich and Parker dams. These nutrient concentrations are then used in conjunction with USGS discharge data (recorded at gages in the Parker River at Byfield, MA and the Ipswich River at Ipswich, MA) to calculate annual nutrient loading to the Estuary, coming over each dam. Annual yield is also calculated for both dams.
Year 2012, continuous measurements, every 5 minutes during the first deployment and 15 minutes until the end of the year, were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA.
Year 2013, continuous measurements, every 15 minutes were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA.
Year 2014, continuous measurements, every 15 minutes were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA.
Year 2015, continuous measurements, every 15 minutes were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA.
Year 2016, continuous measurements, every 15 minutes were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA.
Year 2017, continuous measurements, every 15 minutes were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA.
Year 2018, continuous measurements, every 15 minutes were made of conductivity, water temperature in the Parker River behind the head of tide Central St. Dam in Newbury, MA. The datalogger was removed in August and returned to Dr. Green at Plymouth State University.