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ICPRB Hiring two Water Sciences Interns for the Spring/Summer

We are excited to announce that we are hiring for two paid Water Sciences Internship positions for the spring/summer of 2023. The primary tasks of these internships are to revise and enhance the existing water quality data sources inventory, assist with the Potomac River Basin Drinking Water Source Protection Partnership (DWSPP) newsletter and meetings, collect and analyze stream gage data for river spill preparedness; and/or archive ICPRB photographs.

Learn more on our Jobs page… 

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Sign up for ICPRB’s upcoming webinar: Combating Climate Change Through Sustainable Development

On Friday, February 3 from 12-1pm ICPRB will host a webinar on sustainable development in the Potomac basin.

This exciting event is being held as part of the implementation of the Potomac Basin Comprehensive Water Resources Plan and will feature speakers from DC Water and Juno Residential.

Speakers will share information related to sustainable development at non-residential and multi-family residential properties including architectural aspects of sustainable development, practices to combat climate change, and LEED certifications. Presentations will be followed by Q&A with participants.

The event is FREE but registration is required.


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Water monitoring and source water protection in the Potomac River basin and beyond…

Poster of ICPRB projects.

During the lead up to the annual Maryland Water Monitoring Conference (MWMC), we at ICPRB take stock of the projects and reports that we tackled over the past year that are related to monitoring waterways throughout the basin and beyond. We enjoy sharing these projects, discussing ideas, and collaborating with colleagues on future work. Below is a list of the products that we will be featuring at our table at this year’s MWMC. If you will be attending the conference on December 15, please come by and say hi! We’ll have a lot of information, (free!!) maps, and other goodies to share.

Click on the image to open the project in a new tab.


ICPRB’s Featured Source Water Protection and Monitoring Projects for 2022

Source Water Protection Map

A map with information about the people and resources of the Potomac River Basin: A Vital Water Source.

Linking Altered Flow Regimes to Biological Condition: an Example Using Benthic Macroinvertebrates in Small Streams of the Chesapeake Bay Watershed

Regionally scaled assessments of hydrologic alteration for small streams and its effects on freshwater taxa are often inhibited by a low number of stream gages. To overcome this limitation, we paired modeled estimates of hydrologic alteration to a benthic macroinvertebrate index of biotic integrity data for 4522 stream reaches across the Chesapeake Bay watershed.

Considerations for Monitoring Microplastics in the Non-Tidal Potomac River

The Interstate Commission on the Potomac River Basin’s 2022 Clean Water Act Section 106 Potomac Basin Water Quality Improvement grant included an activity to “assist water suppliers in VA, MD, and DC in developing microplastic sampling and analysis methodologies and conduct field sample collection.” This white paper, which explores the feasibility of a microplastic monitoring program in the nontidal Potomac basin, represents the output for this activity. Section 2 describes considerations for collecting and processing samples for microplastics analysis. Section 3 provides a brief explanation of analytical methods and quality control recommendations for the detection, quantification, and identification of microplastics.

Potomac River Water Quality at Great Falls: 1940-2019

This report focuses on changes in temperature, hardness, pH, total solids, chloride, nitrate, and sulfate over the 80 years since ICPRB was formed in 1940.

An Analysis of Pooled Monitoring Data in Maryland to Evaluate the Effects of Restoration on Stream Quality in Urbanized Watersheds

The Interstate Commission on the Potomac River Basin (ICPRB) and the Center for Watershed Protection (CWP) conducted a study to evaluate the effectiveness of stormwater management activities in central Maryland.

 Land Prioritization Mapping Project

This StoryMap explores the Land Prioritization Mapping Project which  aims to assist land conservation organizations in prioritizing specific parcels of land in the Potomac River basin to obtain the most drinking water quality benefits.

Potomac River Basin Drinking Water Source Protection Partnership (DWSPP) Annual Report

DWSPP is a coalition of water utilities and state, interstate, and federal authorities working together to amplify regional source water protection since 2005.

Rapid Response Survey of Cyanobacteria Toxin Levels Downstream of North Fork Shenandoah River Algal Bloom After Tropical Storm Ida, 2021

ICPRB staff track a multi-species algal mat from thhe North Fork off the Shenandoah River to the lower reaches of the river using ICPRBS Emergency River Spill Model.

“Chessie BIBI” Stream Health Indicator

The Chesapeake basin-wide index of biotic integrity for stream macroinvertebrates, or “Chessie BIBI,” is a multi-metric index of biological health for freshwater streams and small, wadeable rivers in the Chesapeake Bay watershed.


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ICPRB Business Meeting on December 2, 2022

The ICPRB will virtually hold its first quarter business meeting on December 6, 2022. Commissioners will be updated on ICPRB efforts to enhance drinking water supply resiliency, a planned revision of the agency’s strategic plan, and a discussion of topics for the 2023 Potomac Conference. The public is invited to view the virtual meeting. Please Contact Us for more information on how to attend.