Interstate Commission on the Potomac River Basin - ICPRB

11/02/2026

🌊 Upcoming opportunity for professionals working on nonpoint source pollution: present at the 2027 Mid-Atlantic Nonpoint Source Workshop, taking place in mid-March 2027 in Silver Spring, Maryland!

Join colleagues from across EPA Region 3, which includes Delaware, DC, Maryland, Pennsylvania, Virginia, West Virginia, and 7 federally recognized tribes, to share ideas, lessons learned, and successful approaches to improving water quality.

We're looking for presentations on:
✅ Watershed planning and implementation
🆕 Innovative practices and technologies
🤝 Partnerships and stakeholder engagement
📊 Monitoring, data, and evaluation
✍ Lessons learned and success stories

We welcome submissions from state, federal, municipal, and Tribal agencies, watershed organizations, consultants, researchers, and other NPS professionals.

📅 Proposals are due November 30, 2026
🔗 Submit a proposal (link in the comments).

📣 Know someone doing great work in nonpoint source management? Please share this opportunity with them!

Do you have a keynote speaker idea, suggestions, or questions about the conference? Let us know at [email protected].

11/02/2026

The report for 11/2/2026:

🔮 While little to no rain is expected over the next few days, the week-long outlook indicates approximately 0.50–1.00 inches of rainfall across the basin, with precipitation generally increasing toward the western portions of the watershed. (US National Weather Service Middle Atlantic River Forecast Center)

🌊 Flow at USGS Science in Maryland-Delaware-District of Columbia Point of Rocks gage is 1,700 cubic feet per second (cfs), which is close to the 25th percentile of 1,830 cfs for this time of year.

In continuous operation since 1895, the Point of Rocks gage is a Century Stream Gage, as it has been providing streamflow data for over 100 years. The iconic blue Point of Rocks bridge, where the USGS gage is located, is currently covered with a tarp for a new coat of paint.

11/01/2026

The report for Nov. 1, 2026:

🌊 Flow at Point of Rocks USGS gage is 1800 cubic feet per second.

🔮 No rain expected over the next 3 days. However, the predicts 0.5 to 1.0 inch of rain in the basin during the next five days. Week-long estimates predict up to a total of 1.75 inches locally.

10/31/2026

As river levels continue to steadily fall, we are seeing more locations drop below normal streamflow for this time of year. Dry weather will continue through the weekend, but renewed chances for rainfall should arrive mid/late week.

10/31/2026

Today’s report:

🎃 Happy Halloween 👻

🍬 Good weather for trick-or-treating…bad weather for drought conditions.

Dry conditions are expected to persist through the next three days, with little to no precipitation forecast across the Potomac River basin.

🔮 The five-day forecast indicates approximately 0.5 to 1 inch of rain across much of the Potomac River basin, with locally higher amounts possible in the western headwaters, particularly the North Branch and South Branch Potomac watersheds.

🌊 Flow at USGS Point of Rocks gage is 1,930 cubic feet per second.

10/30/2026

Flows have dropped once again below 2,000 cubic feet per second at the USGS Point of Rocks streamgage, and thus we are in drought monitoring status again. Follow us for daily updates on Facebook, Instagram and threads.

Potomac River flow at Point of Rocks has declined steadily following the mid-October rainfall, which briefly pushed flows above 25,000 cfs. Flows are now fluctuating around CO-OP’s daily monitoring threshold of 2000 cfs, which is at the low end of normal for this time of year.

No substantial rain is expected over the next three days. 1 to 2 inches of rain are forecast for later next week.

10/28/2026

Who doesn't love a good map? 🗺 For the past few weeks, we have been highlighting new and recently-updated spatial data tools from the ICPRB team. Next up: an interactive map that highlights areas in the Potomac basin that are most susceptible to runoff impacts, including flooding, streambank erosion, and pollution.

Land use decision-makers can use the data as a factor in siting new development, anticipating the effects of planned development and/or identifying areas where mitigation efforts may prove useful.

This map was published a few months back as part of the implementation of ICPRB's Potomac Basin Comprehensive Water Resources Plan. The science behind the map is documented in a peer-reviewed paper written by ICPRB staff and published in the Journal of the American Water Resources Association.

Explore the map and learn more about the data that make up the susceptibility index by clicking the link in the comments.

10/27/2026

Spooky season is here, and so are some spooky sources of pollution! How many of these pollution monsters have you heard about?

💀 Stormwater Skeleton - Stormwater is the fastest-growing pollution source in the Potomac watershed! You can help keep stormwater as clean as possible by being wary of your use of materials like de-icing salt, paint, and cleaning solutions.

🦠 Harmful Algal Blooms - Excess nutrients from fertilizer & animal waste can cause (sometimes toxic) algae to grow unchecked in waterways. Be sure to only add nutrients intentionally & always pick up your pet’s p**p!

🚽 The Baby Wipe Mummy - Think you can flush wipes? Think again! This monster can cause blockages in your home and infrastructure problems in your community.

🎃 Bonus! - While not pollution, these menaces are creeping up on us!

🐟🌿🐚 Invasive Species - Invasive species may out-compete native species, oftentimes in more polluted waterways.

🥤 The Drought Vampire - Like a vampire, drought is a pesky problem that’s difficult to permanently stave off!

10/27/2026

10/23/2026

ICPRB Director of Program Operations, Dr. Heidi Moltz, is Guest Editor on an upcoming special issue of the journal Water MDPI on "Integrated Management of Water Resources: Science, Policy and Management".

They are currently accepting manuscripts for the Special Issue, which will explore how integrated approaches to water resources management are put into practice and what can be learned from those experiences.

The issue will feature original research and case studies that examine how integrated management approaches are planned, implemented, governed, evaluated, adapted and sustained. Of particular interest are lessons about what enables or constrains integration, how approaches evolve in response to changing conditions, and how experiences from one context can inform practice in another.

Perspective topics include the following:

- Integrated water resources management (IWRM) theory and practice;
- Integrated Lake Basin Management (ILBM);
- Integrated Lentic-Lotic Basin Management (ILLBM);
- Basin-scale planning and implementation;
- Transboundary and multi-jurisdictional water governance;
- Adaptive management;
- Water quality and quantity management;
- Stakeholder engagement and collaborative decisionmaking;
- Monitoring, assessment, and decision-support tools;
- Policy, institutional, and financing innovations;
- Case studies and lessons learned.

Submission deadline is April 30, 2027.