Lower Long Lake

High HazardUnsatisfactory ConditionEmergency Action Plan: Yes

Location

StateColorado
CountyJefferson
Nearest CityARVADA
River/StreamRALSTON CREEK-OS
Coordinates39.81939, -105.22673

Physical Characteristics

Dam TypeEarth
NID Height19 ft
Dam Height19 ft
Dam Length1,350 ft
Year Completed1939 (87 years old)

Storage & Hydraulics

NID Storage409 acre-ft
Max Storage409 acre-ft
Normal Storage292 acre-ft
Surface Area30 acres
Max Discharge330 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerDENVER BOARD OF WATER COMMISSIONERS
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentUnsatisfactory
Last Inspection06/08/2022
Emergency Action PlanYes

Identifiers

NID IDCO01784
Federal IDCO01784
More InfoState Dam Safety Program

Nearby Dams

Churches 0.5 mi Low Upper Long Lake 0.5 mi High Ralston 1.1 mi High Blunn 1.2 mi High Tucker Lake - South Dam 1.6 mi High Tucker Lake - North Dam 1.7 mi High Broad 3.2 mi Low Leyden 3.3 mi High Hyatt 3.7 mi High Francis Smart 3.7 mi Low