The Dethridge Point Alliance Ramp 1 is a public boat ramp located at Lake Eildon near the township of Eildon, Victoria. It is the high-level ramp in the Alliance Ramp complex and remains operational when the lake storage is above 59.

3% capacity, making it one of the more reliably accessible ramps on the lake during periods of lower water levels.

The ramp is managed by Goulburn Murray Water and is monitored by a Boating Victoria camera that updates every five minutes, giving boaters a real-time indication of ramp and car park activity before arrival.

When lake levels drop significantly, this ramp is among the few public access points that remain usable, alongside Jerusalem Creek and Goughs Bay ramps.