Watershed Report

Watershed Report
Tyronza River
0802020307

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) Tyronza River (0802020307) Area Summary Area - Square Miles...........................: 490.59 Area - Acres..................................: 317668.61 Elevation Summary Meters Feet Elevation Maximun.............................: 91.00 298.00 Elevation Minimum.............................: 54.00 177.00 Elevation Average.............................: 70.00 230.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: 6.34 1.29% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .57 .12% Septic Limited................................: 3.28 .67% Septic Very Limited...........................: 477.21 97.08% Septic Not Rated..............................: 4.15 .84% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 339.68 69.10% Hydric Soils No...............................: 147.74 30.06% Hydric Soils Unrated..........................: 4.14 .84% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: 37.04 7.54% Prime Farmland if Drained............................: 96.60 19.65% Prime Farmland if Drained and Protected from Flooding: 270.97 55.13% Prime Farmland if Protected from Flooding............: 70.19 14.28% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 16.74 3.41% Unrated Farmland.....................................: .00 -.--%

Sub-Watershed Summary (12 Digit HUC) Ditch No. 31 Outlet (080202030702) Area Summary Area - Square Miles...........................: 24.71 Area - Acres..................................: 15999.17 Elevation Summary Meters Feet Elevation Maximun.............................: 78.00 256.00 Elevation Minimum.............................: 63.00 207.00 Elevation Average.............................: 69.00 226.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .00 -.--% Septic Very Limited...........................: 24.79 99.96% Septic Not Rated..............................: .01 .04% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 24.05 96.94% Hydric Soils No...............................: .75 3.02% Hydric Soils Unrated..........................: .01 .04% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 24.58 99.11% Prime Farmland if Protected from Flooding............: .19 .77% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: .03 .12% Unrated Farmland.....................................: .00 -.--%

National Ditch (080202030704) Area Summary Area - Square Miles...........................: 36.43 Area - Acres..................................: 23585.35 Elevation Summary Meters Feet Elevation Maximun.............................: 75.00 246.00 Elevation Minimum.............................: 63.00 207.00 Elevation Average.............................: 70.00 230.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .00 -.--% Septic Very Limited...........................: 36.41 99.97% Septic Not Rated..............................: .01 .03% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 30.89 84.82% Hydric Soils No...............................: 5.52 15.16% Hydric Soils Unrated..........................: .01 .03% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .02 .05% Prime Farmland if Drained and Protected from Flooding: 34.71 95.30% Prime Farmland if Protected from Flooding............: .75 2.06% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: .94 2.58% Unrated Farmland.....................................: .00 -.--%

Lower Ditch No. 40 (080202030708) Area Summary Area - Square Miles...........................: 34.79 Area - Acres..................................: 22528.95 Elevation Summary Meters Feet Elevation Maximun.............................: 74.00 243.00 Elevation Minimum.............................: 64.00 210.00 Elevation Average.............................: 69.00 226.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .31 .89% Septic Very Limited...........................: 34.53 99.11% Septic Not Rated..............................: .00 -.--% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 27.35 78.50% Hydric Soils No...............................: 7.49 21.50% Hydric Soils Unrated..........................: .00 -.--% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 31.27 89.73% Prime Farmland if Protected from Flooding............: 3.36 9.64% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: .22 .63% Unrated Farmland.....................................: .00 -.--%

Ditch No. 22-Tyronza River (080202030710) Area Summary Area - Square Miles...........................: 32.85 Area - Acres..................................: 21272.40 Elevation Summary Meters Feet Elevation Maximun.............................: 71.00 233.00 Elevation Minimum.............................: 57.00 187.00 Elevation Average.............................: 66.00 216.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: 4.85 14.77% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .00 -.--% Septic Very Limited...........................: 27.55 83.92% Septic Not Rated..............................: .43 1.31% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 23.88 72.72% Hydric Soils No...............................: 8.53 25.97% Hydric Soils Unrated..........................: .43 1.31% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: 6.53 19.88% Prime Farmland if Drained............................: 25.76 78.44% Prime Farmland if Drained and Protected from Flooding: .06 .18% Prime Farmland if Protected from Flooding............: .06 .18% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: .43 1.31% Unrated Farmland.....................................: .00 -.--%

Big Creek-Tyronza River (080202030711) Area Summary Area - Square Miles...........................: 36.98 Area - Acres..................................: 23945.19 Elevation Summary Meters Feet Elevation Maximun.............................: 71.00 233.00 Elevation Minimum.............................: 57.00 187.00 Elevation Average.............................: 65.00 213.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .00 -.--% Septic Very Limited...........................: 36.19 96.74% Septic Not Rated..............................: 1.22 3.26% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 29.94 80.03% Hydric Soils No...............................: 6.25 16.71% Hydric Soils Unrated..........................: 1.22 3.26% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: 9.59 25.63% Prime Farmland if Drained............................: 26.59 71.08% Prime Farmland if Drained and Protected from Flooding: .00 -.--% Prime Farmland if Protected from Flooding............: .00 -.--% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 1.23 3.29% Unrated Farmland.....................................: .00 -.--%

Ditch No. 58-Tyronza River (080202030709) Area Summary Area - Square Miles...........................: 32.05 Area - Acres..................................: 20753.67 Elevation Summary Meters Feet Elevation Maximun.............................: 72.00 236.00 Elevation Minimum.............................: 60.00 197.00 Elevation Average.............................: 67.00 220.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .10 .31% Septic Very Limited...........................: 31.63 99.22% Septic Not Rated..............................: .15 .47% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 28.34 88.90% Hydric Soils No...............................: 3.39 10.63% Hydric Soils Unrated..........................: .15 .47% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: 2.15 6.74% Prime Farmland if Drained and Protected from Flooding: 27.92 87.55% Prime Farmland if Protected from Flooding............: 1.59 4.99% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: .23 .72% Unrated Farmland.....................................: .00 -.--%

Ditch No. 6 (080202030703) Area Summary Area - Square Miles...........................: 47.04 Area - Acres..................................: 30461.03 Elevation Summary Meters Feet Elevation Maximun.............................: 83.00 272.00 Elevation Minimum.............................: 67.00 220.00 Elevation Average.............................: 75.00 246.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .04 .08% Septic Limited................................: .21 .45% Septic Very Limited...........................: 46.66 98.88% Septic Not Rated..............................: .28 .59% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 36.54 77.43% Hydric Soils No...............................: 10.37 21.97% Hydric Soils Unrated..........................: .28 .59% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 35.85 75.99% Prime Farmland if Protected from Flooding............: 6.88 14.58% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 4.45 9.43% Unrated Farmland.....................................: .00 -.--%

Gibson Bayou-Tyronza River (080202030712) Area Summary Area - Square Miles...........................: 63.92 Area - Acres..................................: 41387.65 Elevation Summary Meters Feet Elevation Maximun.............................: 73.00 239.00 Elevation Minimum.............................: 54.00 177.00 Elevation Average.............................: 65.00 213.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: 1.48 2.31% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .00 -.--% Septic Very Limited...........................: 61.59 96.13% Septic Not Rated..............................: 1.00 1.56% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 40.73 63.56% Hydric Soils No...............................: 22.35 34.88% Hydric Soils Unrated..........................: 1.00 1.56% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: 20.92 32.65% Prime Farmland if Drained............................: 42.08 65.67% Prime Farmland if Drained and Protected from Flooding: .00 -.--% Prime Farmland if Protected from Flooding............: .03 .05% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 1.05 1.64% Unrated Farmland.....................................: .00 -.--%

Upper Ditch No. 40 (080202030705) Area Summary Area - Square Miles...........................: 38.51 Area - Acres..................................: 24937.48 Elevation Summary Meters Feet Elevation Maximun.............................: 88.00 289.00 Elevation Minimum.............................: 66.00 216.00 Elevation Average.............................: 72.00 236.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .66 1.72% Septic Very Limited...........................: 37.57 97.79% Septic Not Rated..............................: .19 .49% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 21.07 54.84% Hydric Soils No...............................: 17.16 44.66% Hydric Soils Unrated..........................: .19 .49% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 24.90 64.83% Prime Farmland if Protected from Flooding............: 12.28 31.97% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 1.23 3.20% Unrated Farmland.....................................: .00 -.--%

Ditch No. 31 Headwaters (080202030701) Area Summary Area - Square Miles...........................: 53.95 Area - Acres..................................: 34935.69 Elevation Summary Meters Feet Elevation Maximun.............................: 91.00 298.00 Elevation Minimum.............................: 66.00 216.00 Elevation Average.............................: 76.00 249.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .21 .39% Septic Limited................................: 1.17 2.17% Septic Very Limited...........................: 52.10 96.61% Septic Not Rated..............................: .45 .83% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 35.64 66.06% Hydric Soils No...............................: 17.86 33.10% Hydric Soils Unrated..........................: .45 .83% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 36.88 68.37% Prime Farmland if Protected from Flooding............: 11.80 21.88% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 5.26 9.75% Unrated Farmland.....................................: .00 -.--%

Ditch No. 9 (080202030707) Area Summary Area - Square Miles...........................: 45.55 Area - Acres..................................: 29493.00 Elevation Summary Meters Feet Elevation Maximun.............................: 89.00 292.00 Elevation Minimum.............................: 63.00 207.00 Elevation Average.............................: 71.00 233.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .31 .67% Septic Limited................................: .83 1.80% Septic Very Limited...........................: 44.61 96.83% Septic Not Rated..............................: .32 .69% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 10.94 23.75% Hydric Soils No...............................: 34.81 75.56% Hydric Soils Unrated..........................: .32 .69% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 20.21 43.87% Prime Farmland if Protected from Flooding............: 24.62 53.44% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: 1.24 2.69% Unrated Farmland.....................................: .00 -.--%

Middle Ditch No. 40 (080202030706) Area Summary Area - Square Miles...........................: 43.81 Area - Acres..................................: 28369.03 Elevation Summary Meters Feet Elevation Maximun.............................: 87.00 285.00 Elevation Minimum.............................: 66.00 216.00 Elevation Average.............................: 70.00 230.00 Septic Suitability Sq. Miles % of Total Septic Not Limited............................: .00 -.--% Septic Slighty Limited........................: .00 -.--% Septic Somewhat Limited.......................: .00 -.--% Septic Moderately Limited.....................: .00 -.--% Septic Limited................................: .01 .02% Septic Very Limited...........................: 43.56 99.79% Septic Not Rated..............................: .08 .18% Hydric Soils Sq. Miles % of Total Hydric Soils Yes..............................: 30.31 69.44% Hydric Soils No...............................: 13.26 30.38% Hydric Soils Unrated..........................: .08 .18% Soil Productivity Sq. Miles % of Total Prime Farmland.......................................: .00 -.--% Prime Farmland if Drained............................: .00 -.--% Prime Farmland if Drained and Protected from Flooding: 34.59 79.24% Prime Farmland if Protected from Flooding............: 8.63 19.77% Prime Farmland of Statewide Importance...............: .00 -.--% Not Prime Farmland...................................: .43 .99% Unrated Farmland.....................................: .00 -.--%