General

• Vicinity Map
• Region (Map) ............... Upper Colorado
• State (Map) ............................... Colorado
• County ...................................... Archuleta
• Project ........................... San Juan-Chama
• Dam type .................................. Diversion
• Location ............... 6 mi E of Chromo, CO
• Watercourse ...................... Navajo River
• Original Construction ...................... 1970
• National ID Number ........................... NA
• Hydrologic Unit Code .............................

Dimensions

• Crest Elevation ............................ 7687.29 ft
• Weir Crest Elevation .................. 7678.24 ft
• Structural Height .............................. 38.6 ft
• Hydraulic Height .............................. 17.5 ft
• Weir Crest Length ............................... 50 ft
• Crest Length ....................................... 790 ft
• Crest Width ........................................... NA
• Base Width ............................................ NA
• Volume ..................................... 32,100 cu yd

Hydraulics

• Spillway capacity at
•   El 7684.29 .................................. 2,940 cfs
• Diversion capacity ....................... 650 cfs

Headworks

• Oso Feeder Conduit:  13- by 10-ft top seal radial gate and 36- by 36-inch cast iron slide gate.
• Sluiceway:  72- by 72-inch cast iron slide gate.
• 48-inch bypass pipe:  48- by 48-inch cast iron slide gate.