Cessna Aircraft Undifferentiated or Other Model
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Sea; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 600; Flight Crew Total 3500; Flight Crew Type 100
Fatigue; Situational Awareness
Deviation / Discrepancy - Procedural Landing Without Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors; Chart Or Publication; Procedure
After 2 days of long cross country flying; I was on the last day along the Hudson river through the NY special flight rules with Presidential TFR in progress. There was a higher stress/workload due to airspace and active TFR navigation. After flying north the corridor then up near military academy; turned eastward towards destination. Using map I thought I was going to do a water landing at what appeared to be one lake; but after landing decided our navigation was incorrect. I did an immediate takeoff and left the lake. However the lake; not being published on FAA charts; I later found out seaplane ops were prohibited. There was not any safety issue I could see that would consider this unsafe; and I kept visual with boat traffic and people; but was unaware the lake wasn't seaplane approved. There should be a better database of lakes; rivers; waterways that are legal/safe to land that is inclusive.
Pilot reported that due to a Presidential TFR and fatigue; pilot landed on a lake that was not approved for seaplane operations.