Watershed Report

Watershed Report
Blackfish Bayou-St. Francis River
0802020311

The Center for Advanced Spatial Technologies at the University of Arkansas has developed the Arkansas Automated Reporting and Mapping System with funding from the Arkansas 85th General Assembly through the Arkansas Natural Resource Commission. The 308 ten-digit watershed units and the 1556 twelve-digit watershed units were delineated by the Natural Resources Conservation Service, a division of the US Department of Agriculture. For all watersheds that cross the Arkansas border, only the Arkansas portion of the watershed was used for mapping and statistical reporting.

Watershed Summary (10 Digit HUC) Blackfish Bayou-St. Francis River (0802020311) Area Summary Area - Square Miles...........................: 324.24 Area - Acres..................................: 209952.42 Elevation Summary Meters Feet Elevation Maximun.............................: 136.00 446.00 Elevation Minimum.............................: 45.00 148.00 Elevation Average.............................: 66.00 216.00 Population Summary Population Estimate for 1990..................: 6706.00 Population Density for 1990 (persons/sq mi)...: 20.68 Population Estimate for 2000..................: 8130.00 Population Density for 2000 (persons/sq mi)...: 25.07 Population Percent Change.....................: 21.23% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 99.79 30.78% 102.93 31.75% 3.15% 0-5 105.16 32.43% 109.07 33.64% 3.72% 5-10 33.18 10.23% 28.94 8.93% -12.78% 10-25 47.33 14.60% 42.94 13.24% -9.28% 25-50 22.72 7.01% 16.66 5.14% -26.67% 50-100 5.47 1.69% 4.25 1.31% -22.30% 100-500 8.89 2.74% 17.98 5.55% 102.25% 500-1000 .99 .31% .80 .25% -19.19% > 1000 .69 .21% .64 .20% -7.25%

Sub-Watershed Summary (12 Digit HUC) Little Crow Creek-St. Francis River (080202031102) Area Summary Area - Square Miles...........................: 28.39 Area - Acres..................................: 18382.22 Elevation Summary Meters Feet Elevation Maximun.............................: 130.00 426.00 Elevation Minimum.............................: 49.00 161.00 Elevation Average.............................: 62.00 203.00 Population Summary Population Estimate for 1990..................: 1270.00 Population Density for 1990 (persons/sq mi)...: 44.73 Population Estimate for 2000..................: 1048.00 Population Density for 2000 (persons/sq mi)...: 36.91 Population Percent Change.....................: -17.48% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 10.55 37.16% 11.87 41.81% 12.51% 0-5 5.09 17.93% 4.67 16.45% -8.25% 5-10 1.21 4.26% .92 3.24% -23.97% 10-25 8.37 29.48% 6.09 21.45% -27.24% 25-50 1.58 5.57% 3.18 11.20% 101.27% 50-100 .00 -.--% .01 .04% -.--% 100-500 .54 1.90% .77 2.71% 42.59% 500-1000 .25 .88% .15 .53% -40.00% > 1000 .29 1.02% .24 .85% -17.24%

Cow Bayou-St. Francis River (080202031104) Area Summary Area - Square Miles...........................: 43.88 Area - Acres..................................: 28415.10 Elevation Summary Meters Feet Elevation Maximun.............................: 64.00 210.00 Elevation Minimum.............................: 49.00 161.00 Elevation Average.............................: 58.00 190.00 Population Summary Population Estimate for 1990..................: 143.00 Population Density for 1990 (persons/sq mi)...: 3.26 Population Estimate for 2000..................: 73.00 Population Density for 2000 (persons/sq mi)...: 1.66 Population Percent Change.....................: -48.95% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 17.22 39.24% 10.97 25.00% -36.30% 0-5 24.75 56.40% 32.55 74.18% 31.52% 5-10 .63 1.44% .53 1.21% -15.87% 10-25 .26 .59% .00 -.--% -.--% 25-50 .79 1.80% .00 -.--% -.--% 50-100 .40 .91% .00 -.--% -.--% 100-500 .00 -.--% .01 .02% -.--% 500-1000 .00 -.--% .00 -.--% -.--% > 1000 .00 -.--% .00 -.--% -.--%

Alligator Bayou (080202031105) Area Summary Area - Square Miles...........................: 26.74 Area - Acres..................................: 17314.25 Elevation Summary Meters Feet Elevation Maximun.............................: 67.00 220.00 Elevation Minimum.............................: 50.00 164.00 Elevation Average.............................: 58.00 190.00 Population Summary Population Estimate for 1990..................: 266.00 Population Density for 1990 (persons/sq mi)...: 9.95 Population Estimate for 2000..................: 1755.00 Population Density for 2000 (persons/sq mi)...: 65.63 Population Percent Change.....................: 559.77% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 4.33 16.19% 5.45 20.38% 25.87% 0-5 4.69 17.54% 6.94 25.95% 47.97% 5-10 2.42 9.05% 2.75 10.28% 13.64% 10-25 12.62 47.20% 3.25 12.15% -74.25% 25-50 2.46 9.20% .00 -.--% -.--% 50-100 .00 -.--% .13 .49% -.--% 100-500 .00 -.--% 8.00 29.92% -.--% 500-1000 .00 -.--% .00 -.--% -.--% > 1000 .00 -.--% .00 -.--% -.--%

Alligator Bayou-St. Francis River (080202031106) Area Summary Area - Square Miles...........................: 55.86 Area - Acres..................................: 36170.43 Elevation Summary Meters Feet Elevation Maximun.............................: 66.00 216.00 Elevation Minimum.............................: 47.00 154.00 Elevation Average.............................: 57.00 187.00 Population Summary Population Estimate for 1990..................: 138.00 Population Density for 1990 (persons/sq mi)...: 2.47 Population Estimate for 2000..................: 100.00 Population Density for 2000 (persons/sq mi)...: 1.79 Population Percent Change.....................: -27.54% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 12.51 22.40% 21.43 38.36% 71.30% 0-5 41.30 73.93% 24.61 44.06% -40.41% 5-10 .71 1.27% 8.76 15.68% 1133.80% 10-25 1.26 2.26% 1.00 1.79% -20.63% 25-50 .00 -.--% .00 -.--% -.--% 50-100 .01 .02% .00 -.--% -.--% 100-500 .00 -.--% .00 -.--% -.--% 500-1000 .00 -.--% .00 -.--% -.--% > 1000 .00 -.--% .00 -.--% -.--%

St. Francis Floodway (080202031107) Area Summary Area - Square Miles...........................: 56.99 Area - Acres..................................: 36899.71 Elevation Summary Meters Feet Elevation Maximun.............................: 122.00 400.00 Elevation Minimum.............................: 46.00 151.00 Elevation Average.............................: 68.00 223.00 Population Summary Population Estimate for 1990..................: 819.00 Population Density for 1990 (persons/sq mi)...: 14.37 Population Estimate for 2000..................: 683.00 Population Density for 2000 (persons/sq mi)...: 11.98 Population Percent Change.....................: -16.61% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 21.45 37.64% 23.00 40.36% 7.23% 0-5 5.44 9.55% 8.81 15.46% 61.95% 5-10 13.56 23.79% 9.43 16.55% -30.46% 10-25 8.30 14.56% 12.81 22.48% 54.34% 25-50 7.20 12.63% .79 1.39% -89.03% 50-100 .46 .81% 2.04 3.58% 343.48% 100-500 1.17 2.05% .74 1.30% -36.75% 500-1000 .00 -.--% .00 -.--% -.--% > 1000 .03 .05% .00 -.--% -.--%

Bear Creek-St. Francis River (080202031109) Area Summary Area - Square Miles...........................: 22.66 Area - Acres..................................: 14673.39 Elevation Summary Meters Feet Elevation Maximun.............................: 117.00 384.00 Elevation Minimum.............................: 45.00 148.00 Elevation Average.............................: 63.00 207.00 Population Summary Population Estimate for 1990..................: 84.00 Population Density for 1990 (persons/sq mi)...: 3.71 Population Estimate for 2000..................: 75.00 Population Density for 2000 (persons/sq mi)...: 3.31 Population Percent Change.....................: -10.71% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 15.31 67.56% 9.43 41.62% -38.41% 0-5 3.30 14.56% 10.14 44.75% 207.27% 5-10 .56 2.47% .00 -.--% -.--% 10-25 3.65 16.11% 3.27 14.43% -10.41% 25-50 .00 -.--% .00 -.--% -.--% 50-100 .00 -.--% .00 -.--% -.--% 100-500 .00 -.--% .00 -.--% -.--% 500-1000 .00 -.--% .00 -.--% -.--% > 1000 .00 -.--% .00 -.--% -.--%

Blackfish Bayou-St. Francis River (080202031103) Area Summary Area - Square Miles...........................: 41.25 Area - Acres..................................: 26710.88 Elevation Summary Meters Feet Elevation Maximun.............................: 66.00 216.00 Elevation Minimum.............................: 49.00 161.00 Elevation Average.............................: 59.00 194.00 Population Summary Population Estimate for 1990..................: 403.00 Population Density for 1990 (persons/sq mi)...: 9.77 Population Estimate for 2000..................: 324.00 Population Density for 2000 (persons/sq mi)...: 7.85 Population Percent Change.....................: -19.60% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 8.86 21.48% 11.86 28.75% 33.86% 0-5 19.92 48.29% 20.71 50.21% 3.97% 5-10 7.57 18.35% 4.06 9.84% -46.37% 10-25 3.63 8.80% 4.14 10.04% 14.05% 25-50 .76 1.84% .66 1.60% -13.16% 50-100 .69 1.67% .03 .07% -95.65% 100-500 .06 .15% .02 .05% -66.67% 500-1000 .12 .29% .10 .24% -16.67% > 1000 .02 .05% .04 .10% 100.00%

Bear Creek (080202031108) Area Summary Area - Square Miles...........................: 17.37 Area - Acres..................................: 11249.57 Elevation Summary Meters Feet Elevation Maximun.............................: 115.00 377.00 Elevation Minimum.............................: 48.00 157.00 Elevation Average.............................: 83.00 272.00 Population Summary Population Estimate for 1990..................: 142.00 Population Density for 1990 (persons/sq mi)...: 8.18 Population Estimate for 2000..................: 157.00 Population Density for 2000 (persons/sq mi)...: 9.04 Population Percent Change.....................: 10.56% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 5.32 30.63% 7.62 43.87% 43.23% 0-5 .01 .06% .64 3.68% 6300.00% 5-10 6.46 37.19% .70 4.03% -89.16% 10-25 5.00 28.79% 7.78 44.79% 55.60% 25-50 .01 .06% .21 1.21% 2000.00% 50-100 .00 -.--% .00 -.--% -.--% 100-500 .22 1.27% .06 .35% -72.73% 500-1000 .00 -.--% .01 .06% -.--% > 1000 .00 -.--% .00 -.--% -.--%

Little Crow Creek (080202031101) Area Summary Area - Square Miles...........................: 31.10 Area - Acres..................................: 20136.87 Elevation Summary Meters Feet Elevation Maximun.............................: 136.00 446.00 Elevation Minimum.............................: 52.00 171.00 Elevation Average.............................: 103.00 338.00 Population Summary Population Estimate for 1990..................: 3441.00 Population Density for 1990 (persons/sq mi)...: 110.64 Population Estimate for 2000..................: 3915.00 Population Density for 2000 (persons/sq mi)...: 125.88 Population Percent Change.....................: 13.78% Population Density Summary Density Area 1990 % of Total Area 2000 % of Total % Change 0 4.24 13.63% 1.29 4.15% -69.58% 0-5 .65 2.09% .01 .03% -98.46% 5-10 .05 .16% 1.79 5.76% 3480.00% 10-25 4.21 13.54% 4.60 14.79% 9.26% 25-50 9.92 31.90% 11.81 37.97% 19.05% 50-100 3.91 12.57% 2.05 6.59% -47.57% 100-500 6.89 22.15% 8.38 26.95% 21.63% 500-1000 .63 2.03% .53 1.70% -15.87% > 1000 .34 1.09% .37 1.19% 8.82%