Water Depth
Alpine lake depth, cold shock, and wall clearance must never be assumed.

PERMISSION REQUIRED*
Lake Mary is a freshwater alpine lake jump spot near Brighton, Utah. The reported height is about 60 ft, but access and landing conditions must be verified on site.
PERMISSION REQUIRED: confirm legal access, depth, landing clearance, and a safe exit before treating Lake Mary as jumpable.
Overview
Lake Mary is a Big Cottonwood Canyon watershed lake with a high reported cliff. Treat this guide as a planning overview, then verify access, water level, landing depth, and exits at the site before considering a jump.
Quick Answer
Lake Mary is a freshwater alpine lake jump spot near Brighton, Utah. The reported height is about 60 ft, but access and landing conditions must be verified on site.
Key Takeaway
PERMISSION REQUIRED: confirm legal access, depth, landing clearance, and a safe exit before treating Lake Mary as jumpable.
Quick Answer
Lake Mary is a freshwater alpine lake jump spot near Brighton, Utah. The reported height is about 60 ft, but access and landing conditions must be verified on site.
Key Takeaway
PERMISSION REQUIRED: confirm legal access, depth, landing clearance, and a safe exit before treating Lake Mary as jumpable.
Conditions and planning notes
Alpine lake depth, cold shock, and wall clearance must never be assumed.
Follow watershed rules, posted closures, and Brighton-area trail guidance; swimming and jumping may be prohibited.
Use open trails only and avoid climbing to cliff edges if water contact is restricted.
Watershed restrictions, cold water, high ledges, thin-air exertion, and difficult exits are the main concerns.
Granite ledges can be steep, slick, and require a strong outward jump.
Scout with a partner, avoid jumping alone, and leave if watershed restrictions, cold water, high ledges, thin-air exertion, and difficult exits are the main concerns.
Map location
Brighton, Utah, United States
40.59817, -111.58290
Lake Mary sits around Brighton, Utah, United States, putting this lake or reservoir spot in the orbit of Brighton and the broader Utah area of United States. Use the saved coordinates and current map view as a starting point, then confirm the exact approach locally because cliff-jumping access can change around parks, private land, roads, shorelines, and water-management areas.
In northern or mountain climates, spring runoff and cold water can be as important as ledge height. Conditions are not static: rain, snowmelt, drought, changing water levels, current, and weekend crowding can all change what looks like the same jump from one visit to the next. Treat saved route notes as background, not as a present-day clearance to jump.
The main assumed risks include cold or changing lake levels, submerged shelves, boat traffic, difficult exits, and limited rescue access. Access should be treated as conditional until signs, land ownership, permits, and local rules are confirmed. Before anyone climbs to a ledge, inspect the landing zone from the water, identify the exit, look for submerged rocks or debris, and be willing to walk away if the depth, footing, legality, or rescue options are uncertain.
FAQs