Adriatic Lake Dam Reservoir Report

Last Updated: December 21, 2025

Adriatic Lake Dam, also known as Pacific Fishing Lake Dam, is a privately-owned structure located in Franklin County, Missouri.


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Summary

Constructed in 1969, this earth-filled dam stands at a height of 36 feet and serves primarily for recreational purposes. Situated on a tributary to the Meramec River, the dam has a normal storage capacity of 45 acre-feet, with a maximum storage of 80 acre-feet.

Managed by the DAM AND RESERVOIR SAFETY PROG of Missouri, the Adriatic Lake Dam is inspected every 5 years to ensure its structural integrity and safety. With a significant hazard potential, the dam has an uncontrolled spillway and valve outlet gates for water management. The condition assessment in 2007 deemed the dam to be in satisfactory condition, with moderate risk management measures in place.

Water resource and climate enthusiasts will appreciate the unique design and purpose of the Adriatic Lake Dam, as well as its location in the picturesque city of Pacific. This dam not only provides recreational opportunities for residents and visitors but also plays a crucial role in water management and safety in the region. Its significant hazard potential underscores the importance of regular inspections and risk management to ensure the continued functionality of this vital structure.

Year Completed

1969

Dam Length

440

Dam Height

36

River Or Stream

TR TO MERAMEC RIVER

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

33

Drainage Area

60

Nid Storage

80

Structural Height

36

Outlet Gates

Valve

Hazard Potential

Significant

Foundations

Soil

Nid Height

36
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

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.