4/29/11 - Hillsdale Water Quality Project
Watershed Festival
(Hillsdale State Park, Shelter 1)

4/8/11 - 4/10/11: High Plains PFHA
American Competitive Trail Horse Association
(Hillsdale State Park, Saddle Ridge)

4/16/11 - 4/17/11: Heart of America German Shorthaired Pointer Club
Pointer Field Trial and Hunting Test
(Hillsdale State Park)

5/1/11 - Anglers for Autism
Crappie Tournament
(Hillsdale State Park, Jayhawk Boat Ramp)

5/20/11 - 5/22/11: Eastern Ks. Arabian Association
Competitive Trail Ride
(Hillsdale State Park, Saddle Ridge)

5/15/11 - Fishing for Bridget
Fishing Tournament
(Hillsdale State Park, Jayhawk Boat Ramp)

6/4/11 - 6/5/11: Jayhawk Marina Inc.
Catch for a Cause Fishing Tournament Fundraiser
(Hillsdale State Park, Shelter 1, Shelter 2, Jayhawk Boat Ramp)

4/9/11 - RC Barnstormers
Field Work Day
(Hillsdale State Park, RC Flying Field)

4/16/11 - Saddle Ridge Trail Riders
Trail Cleanup
(Hillsdale State Park, Saddle Ridge)

4/18/11 - Kansas Concealed Carry Handgun Class
Kansas Concealed Carry Handgun Class
(Hillsdale State Park, Park Office)