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Hydrology and Hydraulics. Reservoir Configuration. Table 3 Dam and Outlet Configuration for Alternatives . Notes: 1 The spillway weir coefficient was calculated from the given spillway length and a spillway capacity requirement of 50,000 cfs.
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Table 3Dam and Outlet Configuration for Alternatives . Notes: 1 The spillway weir coefficient was calculated from the given spillway length and a spillway capacity requirement of 50,000 cfs
Table 8Multi-Purpose Reservoir Overall Release Schedule (November 24 to March 31)
Table 9Multi-Purpose Reservoir Overall Release Schedule (April 1 to November 23)
Figure 3 Reservoir Water Surface Elevation and Outflow – 100-year Event, Flood Storage Alternative
Figure 2 Comparison of Flood Storage Alternative to Current Conditions – 100-year Event, USGS Gage at Doty
Table 6Flood Storage Reservoir Emptying Time after Flood Events Notes: Time is calculated starting from the time when the reservoir begins storing water (reservoir inflow > 2000 cfs) and ending at the time when reservoir outflow is equal to reservoir inflow.
Table 5Comparison of Flood Storage and Current Conditions Modeling Resultsat the USGS Gage at Doty Notes: Current = current conditions alternative Flood = flood storage alternative
Figure 14 1996 Flood Hydrograph at Mellen Street
Figure 19 1996 Flood Water Surface Elevation Profile, Existing and Proposed
Figure 13 100-year Hydrograph at Mellen Street
Figure 15 100-year Flood Profile, Existing and Proposed
Figure 16 50-year Water Surface Elevation Profile, Existing and Proposed
Figure 17 10-year Water Surface Elevation Profile, Existing and Proposed
Figure 18 2-year Water Surface Elevation Profile, Existing and Proposed
Figure 7 Exceedance Curves for the Flood Storage and Current Conditions Alternatives – USGS Gage at Doty
Table 10Comparison of Flood Control and Current Conditions Alternatives Monthly Flow Statisticsat the USGS Gage at Doty Notes: Flood = flood storage alternative Current = current conditions alternative
Table 13Comparison of Flood Control and Current Conditions Alternatives Monthly Flow Statistics at the USGS Gage at Grand Mound Notes: Flood = flood storage alternative Current = current conditions alternative
Table 14Comparison of Flood Control and Current Conditions Alternatives Monthly Flow Statisticsat the USGS Gage at Porter Notes: Flood = flood storage alternative Current = current conditions alternative
Figure 5 Comparison of Multi-purpose Alternative to Gage Records – USGS Gage at Doty – Water Years 2001 to 2003
Figure 6 Reservoir Results for Multi-purpose Alternative – Water Years 2001 to 2003
Figure 8 Exceedance Curves for the Multi-purpose and Current Conditions Alternatives – USGS Gage at Doty
Table 11Comparison of Multi-Purpose and Current Conditions Alternatives Monthly Flow Statistics at the USGS Gage at Doty Notes: Multi = multi-purpose alternative Current = current conditions alternative
Table 15Comparison of Multi-Purpose and Current Conditions Alternatives Monthly Flow Statistics at the USGS Gage at Grand Mound Notes: Multi = multi-purpose alternative Current = current conditions alternative
Table 16Comparison of Multi-Purpose and Current Conditions Alternatives Monthly Flow Statistics at the USGS Gage at Porter Notes: Multi = multi-purpose alternative Current = current conditions alternative
Figure 20 Inflow Hydrographs Used at the Upstream Boundary (Doty Gage) for Temperature Modeling
Figure 25 Riverwide flows simulated on July 15, 2010 for the baseline and multi-purpose reservoir scenarios
Figure 26 Riverwide flows simulated on August 22, 2010 for the baseline and multi-purpose reservoir scenarios
Number of days Average Water Column Temperature Exceeds 18°C For Various Reaches
