Swim Guide

August 25, 2022

Is it safe to swim here?

That’s one of the most common questions Riverkeepers get during the summer. To help answer that question, Catawba Riverkeeper operates a summer Swim Guide program to test popular swimming areas on local lakes.


Swim Guide is an international program used by Riverkeepers and other advocates to provide up-to-date recreational water quality data for beaches, lakes, and rivers around the world. Catawba Riverkeeper piloted the program on Lake Wylie in 2019. By 2021, we had expanded the program to 58 sites on the 5 other major lakes – Lake James, Lake Hickory, Lake Norman, Mountain Island Lake, and Lake Wateree – in addition to Lake Wylie.

How does it work?

Riverkeeper staff, interns, and volunteers collect samples on Thursday mornings, which are tested for E. coli in the Riverkeeper’s in-house lab. Results are posted on Fridays in a stoplight system (green, yellow, red), so that you can make informed decisions about swimming over the weekend.


Contact lauren.h@catawbariverkeeper.org to learn how you can volunteer!

Why test for E. coli?

Recreational standards usually focus on indicator bacteria, which are used to detect the level of fecal contamination in the water. E.Coli is considered a better indicator of human sewage than other types of bacteria because they are found in intestines of warm blooded animals. E. coli is the type of bacteria that local health authorities look for in freshwater. Primary contact with water containing high levels of fecal bacteria and other pollutants can lead to disease, infection, and rashes.


Results are also be shared on the national Swim Guide map and will follow a stoplight system to help you easily understand results. Locations that come back with high amounts of E. coli will be marked red.

We’re looking for volunteers to drive their boats to designated spots each week. All supplies will be provided and gas will be reimbursed by Catawba Riverkeeper. Learn more and email lauren.h@catawbariverkeeper.org if you’re interested.

Sponsor a site or a lake or river!

Site sponsorships are $500 and cover the cost of materials required to collect samples and run tests weekly for each site. Lake sponsorships are $5,000 and cover the personnel expenses incurred by staff and interns for time and mileage. Select your site or lake by typing in the name of the site or lake after you hit “donate once” on the main giving page. Sponsorship requests are granted on a first come, first served basis. Sites must be chosen from the list of sites on the Swim Guide webpage.

See the sponsored and available sites and lakes or rivers on the map below. We’ll update the map as new sponsors sign up.

Lake or River Segments for Sponsorship

  • Lake James
  • Lake Rhodhiss
  • Lake Hickory
  • Lake Norman
  • Mountain Island Lake
  • South Fork River
  • Lake Wylie – Sponsored by the Borman Family
  • Free flowing Catawba below Lake Wylie Dam
  • Lake Wateree

The Riverkeeper’s sample data provides a general guide to the health of the waterway and should only be used for informational purposes. This data does not guarantee the sampled area is safe for swimming at all times. Overall, E. coli levels in the Catawba lakes are low, and the reservoirs are typically safe for swimming. However, E. coli levels can change at any time & increase after rain events. As a general rule, if the water is clear, then E. coli levels are likely to be low.

December 17, 2025
Catawba Riverkeeper is pleased to announce that Dr. Mo Drinkard has been hired as their new Executive Director. A standout among over 100 applicants, Mo was offered the position by the Catawba Riverkeeper Board of Directors search committee on Thursday, November 20th, and she assumed her role as leader of the organization on Monday, December 1st, 2025. Catawba Riverkeeper Brandon Jones, who participated on the search committee, shared that “Mo’s education, experience, and passion are directly aligned with the organization’s mission and needs. We are excited for her perspective and leadership in continuing the critical work of protecting our waters.” Mo is a mission-driven non-profit leader, professor, and scholar with a passion for building strong organizations, nurturing future leaders, and tackling big challenges in conservation, equity, and education. With over 20 years of experience spanning academia (Kent State University, Brevard College, Miami University), community partnerships, and environmental science, she's worn many hats: executive director, grant writer, program architect, DEIB strategist, faculty and student mentor, and not often enough, field biologist in muddy boots. Mo's work lives at the intersection of applied research and social change. She specializes in transforming great ideas into funded, functional, and impactful programs, whether that’s designing experiential learning curricula, guiding strategic organizational turnarounds, or helping community-based groups access the resources they need to thrive. From leading national workforce development initiatives to restoring urban watersheds (Doan Brook Watershed Partnership) and mentoring the next generation of environmental scientists, Mo brings an entrepreneurial spirit and deep subject matter expertise in biology, ecology, sustainability, and inclusion. Mo believes that science is for everyone, and that real change happens when we build spaces where all voices can lead. “I am honored and excited to offer leadership for the next chapter of Catawba Riverkeeper’s work. I believe deeply in the mission and am fully invested in the health and future of this watershed. I look forward to getting to work supporting the waterways, communities, and people that make up this expansive and impactful basin,” Dr. Drinkard said. Catawba Riverkeeper, currently one of the ten largest riverkeeper organizations in the United States, boasts over 8,000 members across the 26 counties of North and South Carolina where the waters of the Catawba flow. As the fifth Executive Director of the organization, Mo will bring new and innovative ways to advance the work of her predecessors and the mission of the organization in this new chapter of Catawba Riverkeeper’s leadership. Mo will be supported by 11 full-time staff and 22 volunteer board members to preserve, protect, and restore the Catawba River so that it sustains plentiful, clean water for generations to come.
October 13, 2025
Thank you to our 2025 Catawba Riversweep volunteers!
October 13, 2025
John Searby Steps Down as Executive Director After 6 Years of Leadership