LWI Region 3 Modeling Overview

STRUCTURE-SPECIFIC REQUIREMENTS Bridges/culverts:

Dams/weirs: Data includes top elevation, upstream/downstream sections, drawdown, spillway, and outlet pipe details. Required photos: upstream/downstream faces, channels, outlet, and dam top.

Control gates: Surveys capture gate type, opening size, invert elevations, crest elevation, and typical operation rates. Required photos: upstream/ downstream faces and channels.

ADDITIONAL NOTES Structure classifications based on imagery are verified in the field. Digital data entry enables seamless model integration by WSP. Surveys include upstream face, road top profile, bent details, guardrails, low chord elevations, and photos. Each structure point includes type (BR, CU, Weir, XS), road name, and span lengths (Figure 3-13 and Figure 3-14).

Figure 3-13: Bridge survey collection points.

Figure 3-14: Culvert survey collection points.

17

Hydrologic and Hydraulic Modeling Methodology