Southwest Florida - Hernando County

SUBBASIN
AREA
(ACRES)
MAPPED
FLOOD
EVENT
SUBBASIN PREDOMINANT
LANDUSE (RESIDENTIAL,
COMMERCIAL,
INSTITUTIONAL,
AGRICULTURAL,
TRANSPORTATION, OPEN
SPACE, OPEN WATER,
MINING, OTHER)
SUBBASIN PRIMARY
MODELED FLOOD
FEATURE
(DEPRESSION, WET
POND, WETLAND,
CONVEYANCE)
SUBBASIN DISCHARGE
CONDITIONS (CLOSED
BASIN OR POSITIVE
OUTFALL)
SUBBASIN INITIAL STAGE
ASSUMPTIONS (DRY(DTM
USED)), AERIAL
INTERPRTATION FOR
AVERAGE WET WATER
SURFACE CONTROL
ELEVATION
SUBBASIN
PERCOLATION
INCORPORATED IN
MODELING
SUBBASIN VERIFICATION /
VALIDATION DATA AVAIILABLE
(YES OR NO - IF YES PROVIDE
TABLE 1
FLOODPLAIN JUSTIFICATION SUMMARY
CENTRALIA WATERSHED - HERNANDO COUNTY, FL
(100YR/24HR STORM 12.5" RAINFALL, SCS II FLMOD)
FEMA % OF
TOTAL AREA
(ACRES)
MODEL MODEL
FEMA AREA (A
BASIN ID JUNCTION ID
DETAIL)
or AE) (ACRES)
BA1015 NA1015 5.64 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 1.48 26.2% 13.82 0.64 11.41% 3.64 0.00 0.64 11.41% -0.84 0 0 0 0 YES
BA9640 NA9640 3.64 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 13.16 0.93 25.65% 4.02 0.00 0.93 25.65% 0.93 0 0 0 0 YES
BA9730 NA9730 19.78 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 12.54 4.45 22.50% 2.52 0.29 4.74 23.97% 4.74 0 0 0 0 YES
BA9740 NA9740 9.99 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 12.08 1.05 10.47% 0.73 0.00 1.05 10.47% 1.05 1 0 0 0 YES
BA9850 NA9850 12.16 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 14.06 1.47 12.10% 4.72 0.00 1.47 12.10% 1.47 0 0 0 0 YES
BA9880 NA9880 4.32 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 15.04 1.25 28.84% 1.95 0.00 1.25 28.84% 1.25 0 0 0 0 YES
BA9910 NA9910 7.63 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 14.53 1.78 23.33% 5.22 0.00 1.78 23.33% 1.78 0 0 0 0 YES
BA9920 NA9920 7.97 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry Yes 0.0% 15.04 3.74 46.96% 1.92 0.00 3.74 46.96% 3.74 0 0 0 0 YES
BA9930 NA9930 8.95 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 14.51 0.00 0.03% 0.00 0.00 0.00 0.03% 0.00 0 0 0 0 YES
BA9940 NA9940 3.39 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 15.02 0.00 0.08% 0.00 0.00 0.00 0.08% 0.00 0 0 0 0 YES
BA9950 NA9950 14.10 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 4.71 33.4% 13.69 6.10 43.29% 4.36 0.00 6.10 43.29% 1.39 0 0 0 1 YES
BA9980 NA9980 14.08 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 3.22 22.9% 14.32 2.81 19.98% 4.14 0.00 2.81 19.98% -0.41 0 0 0 0 YES
BB6860 NB6860 24.48 100y_5d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 11.81 2.59 10.59% 1.66 0.41 3.00 12.27% 3.00 1 0 0 0 YES
BB7030 NB7030 8.76 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 12.40 3.79 43.29% 2.28 0.32 4.11 46.94% 4.11 0 0 0 1 YES
BB7270 NB7270 7.06 100y_5d OPEN SPACE WET POND CLOSED BASIN Wet_Dep Yes 0.0% 14.52 3.30 46.68% 1.61 0.00 3.30 46.68% 3.30 0 0 0 1 YES
BB7340 NB7340 5.74 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep Yes 0.0% 14.07 2.17 37.80% 1.56 0.00 2.17 37.80% 2.17 0 0 0 0 YES
BB7560 NB7560 16.54 100y_5d OPEN SPACE WET POND CLOSED BASIN Wet_Dep Off 0.0% 14.57 2.43 14.71% 1.69 0.00 2.43 14.71% 2.43 0 0 0 0 YES
BB7600 NB7600 6.57 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep Yes 0.0% 13.00 1.21 18.40% 1.08 0.19 1.40 21.30% 1.40 1 0 0 0 YES
BB7820 NB7820 9.79 100y_5d OPEN SPACE WET POND CLOSED BASIN Wet_Dep Yes 0.0% 14.73 4.75 48.55% 4.05 0.00 4.75 48.55% 4.75 0 0 0 0 YES
BB7830 NB7830 8.05 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 15.32 0.00 0.03% 0.00 0.00 0.00 0.03% 0.00 0 0 0 0 YES
BC2610 NC2610 5.50 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 17.43 0.00 0.05% 0.00 0.00 0.00 0.05% 0.00 0 0 0 0 YES
BC2620 NC2620 7.70 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 17.17 0.00 0.03% 0.00 0.00 0.00 0.03% 0.00 0 0 0 0 YES
BC2640 NC2640 20.96 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 1.11 5.3% 8.66 7.92 37.77% 2.83 0.49 8.41 40.10% 7.30 1 0 0 0 YES
BC2730 NC2730 6.34 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 16.09 1.11 17.49% 5.41 0.00 1.11 17.49% 1.11 0 0 0 0 YES
BC2880 NC2880 9.14 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 11.53 3.21 35.08% 2.96 0.00 3.21 35.08% 3.21 0 0 0 0 YES
BC2990 NC2990 17.18 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.90 4.02 23.41% 5.73 0.00 4.02 23.41% 4.02 0 0 0 0 YES
BC3000 NC3000 8.34 100y_5d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 12.26 1.76 21.13% 0.99 0.00 1.76 21.13% 1.76 1 0 0 0 YES
BC3040 NC3040 11.19 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep Yes 0.0% 14.77 2.52 22.52% 1.67 0.00 2.52 22.52% 2.52 0 0 0 0 YES
BC3130 NC3130 6.62 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.79 2.95 44.57% 3.69 0.00 2.95 44.57% 2.95 0 0 0 0 YES
BC3190 NC3190 4.75 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.79 2.86 60.20% 5.29 0.09 2.95 62.10% 2.95 0 0 0 0 YES
BC3200 NC3200 4.30 100y_1d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 11.01 1.64 38.08% 1.77 0.00 1.64 38.08% 1.64 0 0 0 0 YES
BC3280 NC3280 23.59 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 10.11 7.48 31.71% 3.08 0.36 7.84 33.24% 7.84 0 0 0 0 YES
BC3300 NC3300 20.13 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 10.44 7.87 39.08% 4.26 0.30 8.17 40.58% 8.17 0 0 0 0 YES
BC3320 NC3320 10.90 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.78 5.99 54.93% 4.79 0.00 5.99 54.93% 5.99 1 0 0 0 YES
BC3360 NC3360 14.49 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 10.14 4.31 29.77% 2.88 1.00 5.31 36.68% 5.31 2 0 0 0 YES
BC3560 NC3560 13.15 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.80 3.63 27.57% 2.72 0.00 3.63 27.57% 3.63 0 0 0 0 YES
BC3640 NC3640 35.57 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.80 16.32 45.87% 3.60 0.28 16.60 46.66% 16.60 1 0 0 0 YES
BC3740 NC3740 7.69 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 9.48 3.64 47.33% 4.25 0.00 3.64 47.33% 3.64 0 0 0 0 YES
BC3930 NC3930 92.61 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 17.52 18.9% 9.14 41.48 44.79% 3.03 0.54 42.02 45.38% 24.50 0 0 0 2 YES
BC3950 NC3950 1.83 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 11.47 0.96 52.48% 5.25 0.00 0.96 52.48% 0.96 0 0 0 0 YES
BD8360 ND8360 13.44 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 4.12 30.7% 10.77 3.99 29.68% 3.73 0.00 3.99 29.68% -0.13 0 0 0 0 YES
BD8770 ND8770 5.06 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 2.40 47.4% 10.26 1.35 26.67% 3.15 0.00 1.35 26.67% -1.05 0 0 0 0 YES
BD8790 ND8790 11.67 100y_5d OPEN SPACE WET POND CLOSED BASIN Wet_Dep 0.0% 13.47 2.43 20.83% 3.24 0.00 2.43 20.83% 2.43 2 0 0 0 YES
BD8970 ND8970 12.85 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 14.27 0.00 0.02% 0.00 0.00 0.00 0.02% 0.00 0 0 0 0 YES
BD8980 ND8980 15.89 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 18.63 0.00 0.02% 0.00 0.00 0.00 0.02% 0.00 0 0 0 0 YES
BD9080 ND9080 33.83 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 11.77 34.8% 9.13 5.55 16.42% 2.07 0.46 6.01 17.78% -5.76 0 0 0 1 YES
BD9100 ND9100 21.84 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 16.12 0.00 0.01% 0.00 0.00 0.00 0.01% 0.00 0 0 0 0 YES
BD9120 ND9120 19.26 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 16.86 0.00 0.01% 0.00 0.00 0.00 0.01% 0.00 0 0 0 0 YES
BD9150 ND9150 14.90 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 16.17 0.00 0.02% 0.00 0.00 0.00 0.02% 0.00 0 0 0 0 YES
BD9280 ND9280 46.55 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 13.03 28.0% 15.55 7.55 16.21% 5.21 0.00 7.55 16.21% -5.48 0 0 0 2 YES
BD9320 ND9320 3.28 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.75 22.9% 10.77 1.02 30.97% 1.72 0.11 1.13 34.32% 0.38 1 0 0 0 YES
BD9520 ND9520 28.89 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 13.95 5.57 19.27% 5.15 0.00 5.57 19.27% 5.57 0 0 0 0 YES
BD9630 ND9630 22.31 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 10.10 45.3% 13.24 11.07 49.60% 4.45 0.73 11.80 52.87% 1.70 0 0 0 1 YES
BD9650 ND9650 10.07 100y_1d OPEN SPACE WETLAND CLOSED BASIN Period_Wet 1.85 18.4% 13.93 3.27 32.48% 0.59 0.00 3.27 32.48% 1.42 0 0 0 0 YES
BD9750 ND9750 11.26 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 3.75 33.3% 13.26 2.85 25.31% 4.07 0.00 2.85 25.31% -0.90 0 0 0 0 YES
BD9780 ND9780 26.34 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 4.45 16.9% 13.25 5.46 20.75% 3.24 0.00 5.46 20.75% 1.01 0 0 0 2 YES
BD9790 ND9790 18.37 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 8.64 47.0% 11.92 5.52 30.05% 3.50 1.35 6.87 37.40% -1.77 1 0 0 0 YES
BF7720 NF7720 16.82 100y_1d RESIDENTIAL DEPRESSION CLOSED BASIN Dry Yes 0.0% 24.09 0.05 0.28% 0.15 0.00 0.05 0.28% 0.05 0 0 1 1 YES
BF7750 NF7750 3.61 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 21.27 0.00 0.07% 0.00 0.00 0.00 0.07% 0.00 0 0 0 0 YES
BF7870 NF7870 6.27 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry Yes 0.0% 21.28 0.46 7.33% 3.71 0.00 0.46 7.33% 0.46 1 0 0 0 YES
BF7880 NF7880 9.21 100y_5d OPEN SPACE DEPRESSION CLOSED BASIN Dry Yes 0.0% 20.36 0.24 2.56% 0.99 0.00 0.24 2.56% 0.24 0 0 0 1 YES
BF7890 NF7890 11.20 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 15.52 0.23 2.05% 0.83 0.00 0.23 2.05% 0.23 0 0 0 1 YES
BF7920 NF7920 6.96 100y_5d RESIDENTIAL WETLAND CLOSED BASIN Nat_Wet 0.0% 19.70 1.28 18.35% 3.37 0.00 1.28 18.35% 1.28 1 0 2 0 YES
BF7930 NF7930 19.74 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 19.70 4.88 24.70% 4.97 0.00 4.88 24.70% 4.88 0 0 0 2 YES
BF8000 NF8000 5.51 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry Yes 0.0% 21.50 0.00 0.08% 0.00 0.00 0.00 0.08% 0.00 0 0 0 0 YES
BF8020 NF8020 12.84 100y_5d OPEN SPACE WETLAND CLOSED BASIN Period_Wet 0.0% 17.44 1.24 9.63% 3.00 0.00 1.24 9.63% 1.24 0 0 0 2 YES
BF8040 NF8040 27.61 100y_5d RESIDENTIAL WETLAND CLOSED BASIN Period_Wet Yes 0.0% 21.49 3.66 13.27% 3.49 0.00 3.66 13.27% 3.66 0 0 3 0 YES
BF8060 NF8060 17.54 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 17.44 1.22 6.94% 3.37 0.36 1.58 9.00% 1.58 0 0 0 0 YES
BF8080 NF8080 4.09 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 16.10 0.51 12.45% 3.84 0.00 0.51 12.45% 0.51 0 0 0 0 YES
BF8100 NF8100 29.25 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 4.94 16.9% 9.85 5.47 18.71% 2.59 0.20 5.67 19.39% 0.73 0 0 0 1 YES
BF8110 NF8110 38.34 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry Yes 0.0% 24.94 0.08 0.22% 0.10 0.00 0.08 0.22% 0.08 0 0 0 1 YES
BF8120 NF8120 5.66 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 1.40 24.7% 16.96 1.32 23.27% 4.13 0.00 1.32 23.27% -0.08 0 0 0 0 YES
BF8150 NF8150 14.85 100y_1d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 7.50 50.5% 16.10 6.28 42.32% 5.94 0.00 6.28 42.32% -1.22 0 0 0 2 YES
BF8170 NF8170 12.84 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 17.10 3.56 27.69% 3.89 0.01 3.57 27.77% 3.57 0 0 0 0 YES
BF8180 NF8180 5.38 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 1.31 24.3% 16.96 1.54 28.71% 5.23 0.00 1.54 28.71% 0.23 0 0 0 0 YES
BF8190 NF8190 4.53 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 19.29 0.00 0.06% 0.00 0.00 0.00 0.06% 0.00 0 0 0 0 YES
BF8230 NF8230 7.03 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry 0.0% 21.27 0.00 0.04% 0.00 0.00 0.00 0.04% 0.00 0 0 0 0 YES
BF8240 NF8240 10.79 100y_5d OPEN SPACE WETLAND CLOSED BASIN Nat_Wet 0.0% 14.19 2.36 21.91% 3.19 0.00 2.36 21.91% 2.36 0 0 0 0 YES
BF8250 NF8250 6.39 100y_1d OPEN SPACE DEPRESSION CLOSED BASIN Dry Yes 0.0% 24.86 0.07 1.05% 0.09 0.00 0.07 1.05% 0.07 0 0 1 0 YES
MODELED
FLOODPLAIN
ELEVATION
(FEET NAVD)
MODELED
FLOODPLAIN
(ACRES)
MODELED
FLOODPLAIN %
OF TOTAL ACRES
MODELED
FLOODPLAIN MAX
DEPTH (FEET)
TRANSITIONAL
(ESTIMATED)
FLOODPLAIN
AREA
TOTAL
FLOODPLAIN AREA-
MODELED PLUS
TRANSITIONAL
ACRES
TOTAL
FLOODPLAIN %
OF TOTAL AREA
FLOODPLAIN
DIFFERENCE -
MODELED
MINUS FEMA
(ACRES)
APPARENT
FLOOD
IMPACT:
ROADS
APPARENT
FLOOD
IMPACT:
DWELLINGS
APPARENT
FLOOD
IMPACT: YARDS
APPARENT
FLOOD IMPACT:
VACANT LOTS
MODELED
FLOODPALIN
REASONABLE
BASED ON
AVAILABLE
INFORMATION
MARCH 2009 1 of 11