General

• Vicinity Map
• Region (Map) ............... Upper Colorado
• State (Map) ............................... Colorado
• County ..................................... Archuleta
• Project .......................... San Juan-Chama
• Dam type .................................. Diversion
• Location ............ 3 mi NE of Chromo, CO
• Watercourse ............ Little Navajo River
• Original Construction ...................... 1970
• National ID Number ........................... NA
• Hydrologic Unit Code .........................   

Dimensions

• Crest Elevation ............................. 7762.6 ft
• Weir Crest Elevation .................... 7756.6 ft
• Structural Height ............................. 23.3 ft
• Hydraulic Height ............................. 10.3 ft
• Weir Crest Length .............................. 20 ft
• Crest Length ...................................... 295 ft
• Crest Width ........................................... NA
• Base Width ............................................ NA
• Volume ............................................ 7,400 cy

Hydraulics

• Spillway capacity at
•   El.7760.58 ..................................... 555 cfs
• Diversion capacity ....................... 150 cfs

Headworks

• Little Oso Feeder Conduit:  72- by 72-inch cast iron slide gate and 24- by 24-inch cast iron slide gate.
• Sluiceway:  48- by 48-inch cast iron slide gate.
• 8-inch bypass pipe:  8-inch diameter cast iron slide gate.