Lake Hollow Dam

Lake Hollow Dam is an earth dam located in Montgomery County, Texas, built in 1970. It carries a High hazard potential classification and has a poor condition assessment.

About Lake Hollow Dam

The primary purpose of Lake Hollow Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cristobal Portella;cynthia Cherry;david Lehman;douglas Cormier;elizabeth Mcamis;eric Johnson;gregory Mattox;ivel Biddy;james Fuller;manuel Martinez;paul Crane;ronald Wade;trenton Terry (private). It impounds the Tr-mill Creek.

The dam stands 19 feet tall and stretches 765 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 130 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 10/17/2023.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Texas dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardPoor ConditionEmergency Action Plan: No

Location

StateTexas
CountyMontgomery
River/StreamTr-mill Creek
Coordinates30.18620, -95.70056

Physical Characteristics

Dam TypeEarth
NID Height19 ft
Dam Height19 ft
Dam Length765 ft
Year Completed1970 (56 years old)

Storage & Hydraulics

NID Storage130 acre-ft
Max Storage130 acre-ft
Normal Storage74 acre-ft
Surface Area12 acres
Drainage Area0 sq mi
Max Discharge2,751 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerCRISTOBAL PORTELLA;CYNTHIA CHERRY;DAVID LEHMAN;DOUGLAS CORMIER;ELIZABETH MCAMIS;ERIC JOHNSON;GREGORY MATTOX;IVEL BIDDY;JAMES FULLER;MANUEL MARTINEZ;PAUL CRANE;RONALD WADE;TRENTON TERRY
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection10/17/2023
Emergency Action PlanNo

Identifiers

NID IDTX00087
Federal IDTX00087
More InfoState Dam Safety Program

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