When the Grand River Dam Authority established its Office of Ecosystems Management in 2004, it did so knowing there was much work ahead. After all, the Grand Lake watershed spans four states including Kansas, Missouri, Arkansas and Oklahoma and culminates into one of the most popular recreation destinations in the region: Grand Lake.

Because Oklahoma only encompasses approximately nine percent of the watershed and the majority of Grand Lake’s water supply originates from neighboring states, GRDA realized it could not face the natural resource challenges alone. Thus, the underlying theme for the department has been to build cooperative relationships to facilitate communication and efficient utilization of resources necessary to accomplish GRDA’s conservation and restoration goals.

GRDA Ecosystem & Education Center
P.O.Box 70, 420 E. Hwy 28
Langley, OK 74350, 918-782-4726

Lake Permits

Residential and Commercial permits for the waters of the Grand River Dam Authority.

2019 Lake Events

GRDA’s annual lake events and programs, hosted by the Ecosystem & Watersheld Management and GRDA Police personnel include: Boat Certified, Rush For Brush, Lake Cleanup, Grand Adventure, Journey To The Bottom Of The Creek, Tour Historic Pensacola Dam, and more.

    Don’t Cut, Don’t Dig, Don’t Build…until you contact GRDA.
    Let’s Be A Good Neighbor…Will help answer the following:
    • Is GRDA my Neighbor?
    • What if I own a structure on GRDA property?
    • What is a Flowage Easement?

    Water Quality Research – To fulfill its commitment to proper environmental stewardship, the GRDA Ecosystems Management Department operates an ongoing water quality research program on all the waters under its control, including the Grand River and Illinois River systems.

    The department accomplishes this with a state-of-the-art water quality research laboratory located inside the GRDA Ecosystems and Education Center in Langley, to focus primarily on lake waters.

    Additionally, the department operates a laboratory on the campus of Northeastern State University in Tahlequah, Oklahoma, near the Illinois River, to focus on river waters.

    Rush For Brush – Since its debut in the spring of 2007, the GRDA Ecosystems Management Department’s innovative Rush For Brush program has served to enhance the fisheries of GRDA waters.

    Simulating natural brush piles, these structures provide protection to fry and fingerlings while staying in place and lasting longer than natural brush piles. This fisheries enhancement helps GRDA to meet its mission as a good steward for the natural resources under its control.

    In 2017, the program won the “State Government Program” Award from Keep Oklahoma Beautiful. In 2018, it also won the “Outstanding Stewards of America’s Waters” from the National Hydropower Association.

    For more information visit our Rush For Brush page. A Rush for Brush Fish Habitat Location Map is also available.

    Adopt-the-Shoreline – The Grand Lake Adopt the Shoreline program is designed to enable participants to organize cleanups through shoreline adoption, with assistance and resources provided by GRDA.

    The program is the result of a coordinated effort among GRDA, Grand Lake Power Squadron, Grand Lake Association, “Grow with Grove” Steering Committee and community volunteers.

    If you are interested in joining the program, visit the Adopt-the-Shoreline page. We look forward to working with you in “Keepin’ it Grand”.

    GRDA/ODWC Wildlife Management Areas

    Neosho Bottoms is a restricted public use area in Ottawa County where GRDA conducts watershed research in association with multiple regional universities and has an educational/research agreement with NEO A&M.  Public access to this land is allowed on a limited basis through a draw hunt process for deer, waterfowl, and turkey hunting.  GRDA also allows Paralyzed Veterans of America exclusive access to about 1,000 acres for recreational opportunities.  For more information about Neosho Bottoms contact Aaron Roper at (918) 323-6234.

    GRDA Hunting Drawing

    If you are selected you will be notified by e-mail.  Call Aaron Roper 918 323 6234 with questions.

    Deer Hunting Registration

    Waterfowl Hunting Registration

    Kyle Williams Boating Safety Class

    Dates at ECO(LANGLEY)

    • March 14
    • April 25
    • May 16
    • June 13
    • June 27

    Dates at ETC(Tulsa)

    • May 9

    A Grand Adventure is an annual 2-day workshop for kids 9-12 years old offered in July at the GRDA Ecosystem & Education Center.

    The workshop includes:

    • Tour world famous Pensacola Dam
    • Zip across the lake on the GRDA Eco- lab boat
    • Check for water clarity
    • Learn how to reduce pollution
    • Seine for bugs and fish (also known as looking for indicator species)
    • Build and launch your own miniature raft and document its travels
    • Kids will each receive a Small Net, Lifejacket, T-shirt, Lunch & Snacks!

    Journey to the Bottom of the Creek on the Illinois River is an annual 2-day workshop for kids 9-12 years old offered in July at the Tahlequah Municipal Armory, Tahlequah, OK.

    The workshop includes:

    • Discover the water cycle
    • How water gets polluted
    • What is really living under the wave
    • How erosion works
    • Seine for bugs and fish (also known as looking for indicator species)
    • Experience a guided float trip on the Illinois River
    • Kids will each receive a Small Net, Lifejacket, T-shirt, Lunch & Snacks!

    Riverology 101, a 3-day workshop for educatiors on the Illinois River.

    The workshop includes:

    • Discover the water cycle
    • How water gets polluted
    • What is really living under the wave
    • How erosion works
    • Seine for bugs and fish (also known as looking for indicator species)
    • Experience a guided float trip on the Illinois River