Technical Reports

The Assabet is a well-studied river. Important studies include:

• OARS' Water Quality Reports can be found under the water quality section.
• The Assabet River Nutrient TMDL (total daily maximum load) prepared for State DEP sets out how to reduce the river's eutrophication to meet water quality standards. 2004.
• Monitoring to Assess Progress toward Meeting the TMDL for Phosphorus in the Assabet River. U.S. Geological Survey Scientific Investigations Report 2013-5140. 2013.
• Monitoring to Assess Progress toward Meeting the TMDL for Phosphorus in the Assabet River—Aquatic Biomass and Sediment Flux. U.S. Geological Survey Scientific Investigations Report 2011-5179. 2011.
• Assabet River Groundwater Flow Model: USGS has modeled the movement of groundwater and surface water in the Assabet River basin. 2008.
• Sediment and Dam Removal Study: the Army Corps of Engineers completed an analysis of sediment remediation options for the river to reduce eutrophication. 2010.
• The Upper Assabet Riverway Plan: the Upper Assabet Riverway Plan aimed to encourage collaboration among the Upper Assabet communities and create a plan to improve water quality, protect biodiversity, and enhance recreational resources. 2003.
• SuAsCoWatershed Assabet River TMDL Study Phase One: Assessment Final Report: ENSR International.2001.

Other relevant studies

Streamflow
• Effects of Water Use and Land Use on Streamflow and Aquatic Habitat in the Sudbury and Assabet River Basins. USGS. Zarriello, Parker, Armstrong, and Carlson. 2010.
  U.S. Geological Survey Scientific Investigations Report 2010-5042
• Characteristics and Classification of Least Altered Streamflows in Massachusetts. USGS. Armstrong, Parker, and Richards. 2007.
  U.S. Geological Survey Scientific Investigations Report 2007-5291
• Simulation of groundwater and surface-water interaction and effects of pumping in a complex glacial-sediment aquifer, east central Massachusetts [Framingham]. USGS. Eggleston et al. 2012.
  U.S. Geological Survey Scientific Investigations Report: 2012-5172
• Evaluation of Streamflow Requirements for Habitat Protection by Comparison to Streamflow Characteristics at Index Streamflow-Gaging Stations in Southern New England. USGS. Armstrong, Parker, and Richards. 2005.
  Water-Resources Investigations Report 03-4332 Version 1.2 (revised June 15, 2005)
• Preliminary Assessment of Streamflow Requirements for Habitat Protection for Selected Sites on the Assabet and Charles Rivers, Eastern Massachusetts. USGS. Parker and Armstrong. 2002.
  U.S. Geological Survey Open-File Report 02-340
• Comparison of Methods for Determining Streamflow Requirements for Aquatic Habitat Protection at Selected Sites on the Assabet and Charles Rivers, Eastern Massachusetts, 2000-02. USGS. Parker, Armstrong, and Richards. 2004.
  Scientific Investigations Report 2004-5092

Sediment studies
• Sediment Studies in the Assabet River, Central Massachusetts, 2003. USGS. Zimmerman and Sorenson. 2005.
  U.S. Geological Survey Scientific Investigations Report 2005-5131