LWI Region 3 Modeling Overview

RESULTS Flow Comparison { Model results aligned better with gage analysis without ARF , suggesting ARF application led to underestimation of peak flows, See Table 4-3. { Deer Park gage showed minimal difference between Open and Closed Gate scenarios, indicating low influence from pumps/gates. { Wild Cow Upper gage showed significant flow differences between scenarios—higher peak flow under Open Gate but higher stage under Closed Gate due to Stillwater effect.

Table 4-3 Peak Flow Comparison between Gage Analysis and Model Peak Flow for 100-year/24-hour storm with and without ARF

MODEL FLOW (NO ARF), CFS

MODEL FLOW (ARF), CFS

GAGE ANALYSIS FLOW, CFS (100-YEAR)

GAGE

SCENARIO

Deer Park

Open Gate

3,662.3

3,592.0

3,773.0

Deer Park

Closed Gate

3,651.0

3,577.0

3,773.0

Wild Cow Upper

Open Gate

4,508.3

4,026.0

4,751.0

Wild Cow Upper

Closed Gate

3,643.1

3,502.0

N/A

52

LWI REGION 3 TRAINING

LOUISIANA WATERSHED INITIATIVE