Elder Creek: Comparison of Flows at Upstream Boundary of CLOMR Section 7.863
Effective LOMR:
County Modified and Corrected Model:
Effective LOMR Hydrograph will be used at this point as inflow.
Elder Creek: Comparison of Downstream Boundary Condition Stages at Section 4.794
Effective LOMR:
County Modified and Corrected Model:
The Effective LOMR Stage Hydrograph will be used as the downstream boundary condition.
Gerber Creek: Comparison of Flows at Upstream Boundary of CLOMR Section 2.044
Effective LOMR:
County Modified and Corrected Model:
Effective LOMR Hydrograph will be used at this point as inflow.
Cross Section Extensions: (per coordination, the latest request was to extend cross sections beyond the 500-year water surface elevations where feasible). An explanation of cross section modifications is described below.
Gerber Creek :
1.319 : Right end of Section upstream of RR crossing. This is a swale draining to Gerber Creek adjacent to railroad. A Blocked area added.
0.9060: Right side section extended to future street grades, which will be inundated in 500-year. We’ve added a block to the end of the section. Left side extended to pads.
0.7610: Added Block to low ground on left end of section.
0.4410 to 0.4370: Points from Terrain added to left side of section and cross section extended left.
0.2120 to 0.0400: Overtopping beyond Gerber Road to the south will divert out of system. Cross sections not extended.
Elder Creek:
7.783 to 7.258: Left side of section connected to storage areas via lateral structure. Limit of section at Weir.
7.0770: Start of Excavated Channel. Also left bank lateral structure is being used here for overtopping flows.
6.0850: Cross section Extended 50 feet right.
5.7860: Cross section extended right with sampled points from terrain
5.5990 to 5.5290: Cross section extended right with sampled points from terrain
5.3740 to 5.2640: Cross section extended rightwith sampled points from terrain
5.1500 to 5.0280: Cross section extended right with sampled points from terrain
5.1500 to 5.0280: Cross section extended right with sampled points from terrain
4.9280 to 4.9040: Cross section extended right with sampled points from terrain