Mcmillan Dam, Texas, USA

Quick Facts About Mcmillan Dam

Location: Lubbock, Texas

Coordinates: 33.533582, -101.694824

River: Double Mountain Fork Brazos R River

Primary Purpose: Water Supply

Type: Earth

Commissioned: 1959

Dam Height: 76 ft (23 m)

Dam Length: 1,600 ft (488 m)

Dam Capacity: 8,280 acre-ft (10,213 Ml)

Hazard Potential: High

Condition Assessment: Fair

Mcmillan Dam Map

Here is a map of Mcmillan Dam with satellite imagery. You can zoom in and out, toggle full screen mode and even enter street view directly from the map.

Mcmillan Dam Information

Mcmillan Dam is an earthen embankment dam located about 0.01 miles from Ransom Canyon, Lubbock, Texas.

The dam, which is on the Double Mountain Fork Brazos R River, was primarily built for Water Supply purposes, but also serves for Recreation benefits.

The dam was designed by PARKHILL SMITH & COPPER;UNKNOWN and commissioned in 1959 and is currently owned by LUBBOCK COUNTY WCID 1.

Mcmillan Dam Structure

The Mcmillan Dam is approximately 1,600 feet (488 m) long, 76 feet (23 m) high and has a structural volume of 0 cubic yards (0 cubic metres).

Mcmillan Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 4,200 acre-ft (5,181 Ml) and maximum capacity of 8,280 acre-ft (10,213 Ml).

The surface area of the reservoir is 200 acres (81 ha) and the total catchment area is 236 square miles (611 square kilometres).

Mcmillan Dam Spillway

The dam has a 138 feet (42 m) wide uncontrolled spillway with a maximum discharge capacity of 27520 cubic feet per second (779 cubic metres per second).

Mcmillan Dam Compared to Four Famous American Dams

	Mcmillan Dam Lubbock, Texas	Hoover Dam Clark County, Nevada	Grand Coulee Dam Okanogan County, Washington	Theodore Roosevelt Dam Maricopa County, Arizona	Glen Canyon Dam Coconino County, Arizona
Height (ft)	76	730	550	357	216
Length (Ft)	1,600	1,244	5,673	6,920	1,565
Storage Volume (acre-ft)	8,280	30,237,000	9,562,000	3,540,000	29,875,000
Drainage Area (sq miles)	236	167,800	74,100	3,611	108,355

Mcmillan Dam Weather

Current Conditions at Mcmillan Dam

Parameter	Value
Current Time	20:35
Sunrise	06:36
Sunset	20:58
Temperature (°F)	96
Feels Like (°F)	96
Cloud Coverage (%)	40
Pressure (inHg)	1012
Humidity (%)	31
Wind Speed (mph)	16
Rain (mm)	0

7-Day Forecast for Mcmillan Dam

Day	Min Temp (°F)	Max Temp (°F)	Feels Like (°F)	Pressure (inHg)	Humidity (%)	Wind Speed (mph)	Wind Gust (mph)	Wind Dir	Precip Prob (%)	Precip Volume (mm)
Today	70	96	93	1013	45	19	33	W	100	18
Sun	75	97	93	1012	31	19	34	S	0	-
Mon	77	100	92	1010	25	22	37	S	0	-
Tue	78	101	94	1006	25	25	38	S	0	-
Wed	77	96	90	1008	31	17	32	S	99	1
Thu	73	93	88	1016	33	14	29	SSE	98	1
Fri	72	91	86	1016	37	21	30	S	0	-
Sat	72	91	85	1014	38	23	31	S	0	-

Mcmillan Dam Frequently Asked Questions

In which state is the Mcmillan Dam?

Mcmillan Dam is in Texas.

In which county is the Mcmillan Dam?

Mcmillan Dam is in Lubbock County.

How high is the Mcmillan Dam?

Mcmillan Dam is 76 feet high.

How long is the Mcmillan Dam?

Mcmillan Dam is 1,600 feet long.

More Dams in Lubbock County:

Mcmillan Dam

More Dams in Texas:

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams