Small Transport
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 90; Flight Crew Total 5300; Flight Crew Type 2500
Situational Awareness
Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway; Inflight Event / Encounter Weather / Turbulence
General None Reported / Taken
Airport; Weather
No WX was available because its a VFR airport; no WX. CNY reported ceiling 9500 calm winds. BDG reported clear calm winds. I checked area forecast; no significant WX. I checked NOTAMs; no NOTAMs for U64. On short approach to Runway 34; I saw evidence of the runway having been plowed. I saw snow on the runway. I perceived that to be a very small amount of snow due to the plow indications. On touchdown; the snow was much deeper; and pulled aircraft off the runway to the right. After I shutdown the aircraft; I walked back through my tracks; snow was shin deep with drifts that were knee deep. Due to the darkness; I had no depth perception of the depth of the snow.
Small transport pilot reported a runway excursion due to snow on the runway.