Go Fish Ohio - Ohio Fishing Information
Go Fish Ohio - Ohio Lake Maps, Fishing Info, Local Weather, Fishing Polls, ODNR Links
Southwest Ohio - ODNR Region 5

Grand Lake St. Marys Fishing Map – SW Ohio

Grand Lake St. Marys Fishing Map | Southwest OhioClick here to view a larger map

Lake Information Details and State Management
Grand Lake St. Marys Grand Lake St. Marys is the largest inland lake located entirely in the State of Ohio. It has an area covering 13500 acres. This lake lies within Ohio Division of Wildlife District Five(5).
Location Grand Lake St. Marys is located in Mercer and Auglaize Counties flanked by the cities of Celina to the northwest and St. Marys to the northeast. The entire lake is bounded by state roads – State Route 29 is on the north side ~ State Route 703 is to the south ~ US Route 127 to the west. It is just west of I-75 off of US Route 33.
Distance from Major Cities Approximately 90 miles southwest of Toledo. Approximately 90 miles northwest of Columbus. Approximately 60 miles north of Dayton.
Fishing Opportunities This big lake has good populations of; *Bluegill *Bullheads *Largemouth Bass *Black and White Crappies *Channel Catfish *Bullheads *Yellow Perch *plus an occasional *Northern Pike or *Striped Bass.
Boating Information There are many marinas around Grand Lake St. Marys. There are boat rentals at many of these so select one that is near the spots that you want to fish. There is no horsepower limit on the lake – but beware! The lake is very shallow with an average depth of only 5-7 feet. There are many stump fields with appetites for boat motors. A No Wake Zone extends 500 feet from shore.
State Management The Ohio Division of Wildlife activities include; monitoring fish populations ~ stocking ~ creel studies ~ vegetation control ~ physical and chemical water analysis.

Grand Lake St. Mary’s LocationCourtesy of Google Maps

A very special THANKS to the Ohio Division of Natural Resources, the Division of Wildlife and the Division of Watercraft for their hard work and dedication in providing Southwest Ohio sportsmen and women with boating safety plus excellent fishing & hunting opportunities!

Turn In a Poacher (1-800-POACHER)

Ohio’s Turn In a Poacher -“TIP” program – helps to curtail poaching throughout the state by involving the public in reporting wildlife violations. If you observe a wildlife violation, click here and submit the form online or print the form and mail to:

TIP Headquarters, Division of Wildlife
2045 Morse Rd., Bldg G
Columbus, Ohio 43229-6693

Or call the TIP toll-free hotline, 1-800-POACHER.


  • RSS Ohio Wildlife News

    • Controlled Hunt Drawing Results! August 16, 2017
      Drawing results for the 2017 Controlled Deer and Waterfowl Hunting Lotteries are now available on our website!
    • Weekly Lake Erie Fishing Report August 16, 2017
      Smallmouth bass fishing has been good nearshore around the Bass Islands!
    • White-nose Syndrome and Surveying Bat Populations August 16, 2017
      Bats are an important component of their ecosystem, being the primary predator of night-flying insects. They save billions of dollars each year for agriculture globally due to lower pesticide loads being needed and a higher success for crops. Most states have shown a decline in their bat populations since white-nose syndrome (WNS) was found, but […]
  • Fishin' Polls

    What is your favorite Central Ohio Lake?

    View Results

    Loading ... Loading ...
  • Current Moon Phase


    New Moon
    New Moon