Water Quality Assessments

Huff & Huff, Inc. has performed numerous water quality assessments on surface water (rivers and lakes) and groundwater. Our extensive experience in the area includes the following areas:

  • Antidegradation Assessments
  • Fish, Macroinvertebrate, and Mussel Collections
  • Chemical Sampling and Testing (e.g. dissolved oxygen and sediment sampling)
  • Physical Measurements (e.g., flow, substrate classification, stream bank erosion rates)
  • Mixing Zone Studies (both field sampling and computer modeling, including CORMIX)
  • Disinfection Exemptions for Wastewater Facilities
  • Dissolved Oxygen Modeling

Some unique water quality issues we have addressed include the search for an endangered mussel in the Mississippi River, relocation of mussels on a variety of streams including the Mississippi River, a year-long study of ammonia levels in the Fox River, and an evaluation of dissolved oxygen conditions in the Salt Creek Watershed.

We have participated in the Environmental Impact Statement (EIS) preparation for surface and groundwater quality impacts, wetlands analysis, and natural resources identification. We have used the FHWA-approved Driscoll and Driver models to estimate pollutant loadings from roadway stormwater runoff in numerous environmental assessments of roadways.

We have also completed surveys of stormwater impacts on receiving streams. Water quality modeling to predict stormwater impacts or discharge impacts have been completed for industrial dischargers in Illinois, Iowa, Ohio, and New York.  Furthermore, we have completed over 50 biological stream studies (benthic, fish, and where appropriate, mussels) to assess the impact of discharges on receiving streams ranging in size from small streams to the Mississippi River.