A dataset containing the floodplain habitat area in acres as a function of flow in cubic feet per second

cottonwood_creek_floodplain

Format

dataframe with 32 rows and 5 variables:

flow_cfs

integer flow value in cubic feet per second

FR_floodplain_acres

fall run floodplain acreage

SR_floodplain_acres

spring run floodplain acreage

ST_floodplain_acres

steelhead floodplain acreage

watershed

name of watershed

Source

USFWS / FEMA 1D HEC-RAS hydraulic model

Fall Run Modeling

A 22.36 mile portion of the entire mapped rearing extent of 22.36 miles was modeled using USFWS / FEMA 1D HEC-RAS hydraulic model. Of the entire mapped rearing extent, 22.36 miles were classified as low gradient and -0.00 miles were classified as high gradient based on a geomorphic analysis. Floodplain area per unit length was determined for the modeled extent and applied to determine areas for the non-modeled extent. A scaling factor of 0.1 was applied to the area per unit length for the high gradient extent. No scaling factor was applied to the low gradient extent.

Spring Run Modeling

A 22.36 mile portion of the entire mapped rearing extent of 119.48 miles was modeled using USFWS / FEMA 1D HEC-RAS hydraulic model. Of the entire mapped rearing extent, 22.36 miles were classified as low gradient and 97.12 miles were classified as high gradient based on a geomorphic analysis. Floodplain area per unit length was determined for the modeled extent and applied to determine areas for the non-modeled extent. A scaling factor of 0.1 was applied to the area per unit length for the high gradient extent. No scaling factor was applied to the low gradient extent.

Steelhead Modeling

A 22.36 mile portion of the entire mapped rearing extent of 142.26 miles was modeled using USFWS / FEMA 1D HEC-RAS hydraulic model. Of the entire mapped rearing extent, 22.36 miles were classified as low gradient and 119.90 miles were classified as high gradient based on a geomorphic analysis. Floodplain area per unit length was determined for the modeled extent and applied to determine areas for the non-modeled extent. A scaling factor of 0.1 was applied to the area per unit length for the high gradient extent. No scaling factor was applied to the low gradient extent.

Examples

cottonwood_creek_floodplain
#> flow_cfs FR_floodplain_acres SR_floodplain_acres ST_floodplain_acres #> 1 40 0.000000 0.000000 0.000000 #> 2 400 0.000000 0.000000 0.000000 #> 3 760 0.000000 0.000000 0.000000 #> 4 1120 0.000000 0.000000 0.000000 #> 5 1480 0.000000 0.000000 0.000000 #> 6 1840 0.000000 0.000000 0.000000 #> 7 1870 0.000000 0.000000 0.000000 #> 8 2200 0.000000 0.000000 0.000000 #> 9 2560 0.000000 0.000000 0.000000 #> 10 2920 0.000000 0.000000 0.000000 #> 11 3280 0.000000 0.000000 0.000000 #> 12 3640 0.000000 0.000000 0.000000 #> 13 4000 0.000000 0.000000 0.000000 #> 14 4360 0.000000 0.000000 0.000000 #> 15 4720 0.000000 0.000000 0.000000 #> 16 5080 0.000000 0.000000 0.000000 #> 17 5440 0.000000 0.000000 0.000000 #> 18 5800 0.000000 0.000000 0.000000 #> 19 6160 0.000000 0.000000 0.000000 #> 20 6520 0.000000 0.000000 0.000000 #> 21 6880 0.000000 0.000000 0.000000 #> 22 7240 0.000000 0.000000 0.000000 #> 23 7600 0.000000 0.000000 0.000000 #> 24 7960 5.910398 8.477617 9.079739 #> 25 8320 13.261246 19.021353 20.372342 #> 26 8680 19.264434 27.632064 29.594628 #> 27 9040 24.203451 34.716375 37.182101 #> 28 9400 29.180553 41.855313 44.828082 #> 29 9760 33.393572 47.898284 51.300254 #> 30 10120 38.032135 54.551636 58.426160 #> 31 10480 43.174776 61.928017 66.326447 #> 32 10840 47.516971 68.156272 72.997063 #> watershed #> 1 Cottonwood Creek #> 2 Cottonwood Creek #> 3 Cottonwood Creek #> 4 Cottonwood Creek #> 5 Cottonwood Creek #> 6 Cottonwood Creek #> 7 Cottonwood Creek #> 8 Cottonwood Creek #> 9 Cottonwood Creek #> 10 Cottonwood Creek #> 11 Cottonwood Creek #> 12 Cottonwood Creek #> 13 Cottonwood Creek #> 14 Cottonwood Creek #> 15 Cottonwood Creek #> 16 Cottonwood Creek #> 17 Cottonwood Creek #> 18 Cottonwood Creek #> 19 Cottonwood Creek #> 20 Cottonwood Creek #> 21 Cottonwood Creek #> 22 Cottonwood Creek #> 23 Cottonwood Creek #> 24 Cottonwood Creek #> 25 Cottonwood Creek #> 26 Cottonwood Creek #> 27 Cottonwood Creek #> 28 Cottonwood Creek #> 29 Cottonwood Creek #> 30 Cottonwood Creek #> 31 Cottonwood Creek #> 32 Cottonwood Creek