However, assuming that the correct location is being referred to, I was not able to find any information about a boat ramp named Swan Lake - Public Boat Access in Illinois. It is possible that the ramp is located on a private lake or pond, or that the information provided is incorrect. Without further information, I am unable to comment on the type or size of the ramp, the body of water it services, or the types of watercraft permitted.
| BARABOO RIVER NEAR BARABOO | 269cfs |
| WISCONSIN RIVER NEAR WISCONSIN DELLS | 3250cfs |
| YAHARA RIVER AT WINDSOR | 15cfs |
| FOX RIVER AT PRINCETON | 686cfs |
| BEAVER DAM RIVER AT BEAVER DAM | 26cfs |
| YAHARA RIVER AT STATE HWY 113 AT MADISON | 54cfs |