Skyhawk 172/Cutlass 172
Flight Crew Private
Flight Crew Last 90 Days 4; Flight Crew Total 374; Flight Crew Type 275
Confusion; Situational Awareness
Airspace Violation All Types; Deviation - Track / Heading All Types
Flight Crew Became Reoriented; Flight Crew Requested ATC Assistance / Clarification
Environment - Non Weather Related; Human Factors
While flying from ZZZ to ZZZ1 used the water landmark that has been there for years. On this day because of the bad drought; I became confused momentarily and used the wrong landmark for my turn. I looked at my GPS and noticed that I was off course. I corrected immediately and tried to contact ZZZ approach and did not receive an answer. I continued on flight to ZZZ1.
Reporter confirmed they tried to make contact with the controlling agency of the airspace and were unable to make radio contact due to congestion.
C172 pilot was flying navigating with visual landmarks. The drought left a prominent water source bare and the pilot learned they were off course; but eventually continued to their destination.