Integrated Report of Surface Water Quality [303(d) List] Assessment Methodologies

Provided below are links to Maryland’s Assessment Methodologies (AMs) used in water body impairment determinations for the Integrated Report (IR) of Surface Water Quality. The AMs provide a consistent logical framework for reviewing water quality data. The public is invited to comment on any of the assessment methodologies during the public comment period for the Integrated Report.

All files below are in portable document format (PDF).

Bacteria Assessment Methodology new! (453KB)

Biological Assessment Methodology for Non-tidal Wadeable Streams (940KB)

Delisting Methodology for Biological Assessments new! (192KB)

Biological Data Quality Guidelines (221KB)

Chesapeake Bay Benthic Biological Assessment Methodology (522KB)

Chesapeake Bay Assessment Methodologies (1793KB)

Assessment Methodology for Dissolved Oxygen and Chlorophyll a Criteria in Maryland’s Seasonally Stratified Water-Supply Reservoirs (88KB)

pH Assessment Methodology (77KB)

Sediment Assessment Methodology (29KB)

Temperature Assessment Methodology for Use Class III(-P) Waters (225KB)

Toxics Assessment Methodology (769KB)