Stream ecology studies in Maryland

Calleva's River School is a premier travel agency located in Poolesville, Maryland. Our institution is dedicated to providing unforgettable outdoor adventures and educational experiences along the beautiful rivers of Maryland. With a prime location at 19936 Fisher Avenue, Calleva's River School offers a wide range of activities such as kayaking, canoeing, stand-up paddleboarding, and more. Our experienced guides and instructors ensure a safe and enjoyable experience for all participants. Whether you're looking for a relaxing day on the water or an exciting river expedition, Calleva's River School has something for everyone. Come join us for an unforgettable journey through the scenic rivers of Maryland.