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Case study

Katy Business District Detention Pond

Design-to-finish excavation and shaping of a 2.4-acre stormwater detention pond for a commercial development in Fort Bend County. Engineered slopes, inlet/outlet coordination, and finish grading to civil drawings.

Location
Katy, TX
Service
Detention Pond
Scale
2.4 acres
Duration
7 weeks
The Scope

Project Overview

A commercial development in Fort Bend County required a 2.4-acre stormwater detention pond built to the district's volumetric and slope standards before vertical permits would be released.

Stone River executed the excavation, shaped the engineered side slopes, coordinated inlet and outlet structure placement with the civil engineer, and finish graded the basin to the civil drawings.

The basin passed district inspection on the first submission.

Scope Detail

What the Work Involved

  • Bulk excavation of the 2.4-acre basin to design volume
  • Engineered side slope cutting and finishing
  • Inlet and outlet structure coordination with the civil engineer
  • Clay liner preparation and compaction
  • Finish grading to civil drawings and as-built documentation
Project Challenges

What Made This Job Hard

1. Slope Tolerance

District standards left little room for error on side slope ratios. GPS machine control held the slopes to design, verified by survey shots at each stage.

2. Groundwater Management

Excavation below the seasonal water table required staged dewatering so shaping and liner work could proceed on stable material.

Results

How It Finished

All detention grades were accepted on first inspection and the developer's vertical permits released on schedule.

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Project Gallery

Katy Business District Detention Pond — site photo 1 Katy Business District Detention Pond — site photo 2 Katy Business District Detention Pond — site photo 3 Katy Business District Detention Pond — site photo 4

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