Cross Bayou -- Cataloging Unit 11140304

• Big Cypress - Sulphur Accounting Unit 111403
  
• Red-Sulphur Subregion 1114
  
• Arkansas-White-Red Region 11 (There are 173 cataloging units in this region.)
  The state composition by area is 57.7% Louisiana, 31.3% Texas, 11.1% Arkansas.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1957.0 km² ( 755.9 mi² ) [% in USA = 18.71, % in Region = 10.40]
  The area from the USGS is 756 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 791)

  IV. Elevation Analysis

  This analysis is based on 782048 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 74.4 m ( 244.1 ft ) [% in USA = 11.75, % in Region = 4.05]
  The elevation standard deviation is 17.3 m ( 56.8 ft ) [% in USA = 8.53, % in Region = 2.31]
  The coefficient of variation is 23.3 %.
  The vertical relief is 98.0 m ( 321.5 ft ) [% in USA = 8.34, % in Region = 1.73]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	42.0	52.0	57.0	60.0	66.3	74.9	78.9	87.5	91.0	94.0	140.0
  feet	137.8	170.6	187.0	196.8	217.5	245.7	258.9	287.1	298.6	308.4	459.3

  

  V. Map Line Analysis

  Note- percentiles are for the feature density, not for the raw total lengths.
  

  line type	km	mi	km/km²	mi/mi²	% in USA	% in Region
  Perennial Shoreline	348.0	216.3	0.178	0.286	77.26	81.50
  Intermittent Shoreline	21.9	13.6	0.011	0.018	86.36	72.83
  Perennial Streams	604.3	375.6	0.309	0.497	58.46	87.28
  Intermittent Streams	441.7	274.5	0.226	0.363	35.01	10.40
  Canals	34.9	21.7	0.018	0.029	72.19	85.55
  1° roads	53.4	33.2	0.027	0.044	77.69	87.28
  2° roads	105.4	65.5	0.054	0.087	85.65	86.71
  3° roads	272.3	169.2	0.139	0.224	83.09	84.97
  4° roads	3380.3	2100.9	1.727	2.779	87.54	96.53
  Total Roads	3811.4	2368.8	1.948	3.134	87.97	97.11
  Railroads	165.9	103.1	0.085	0.136	81.10	83.24
  Pipes and Powerlines	232.4	144.4	0.119	0.191	97.06	98.84

  
  Of the natural water in this HUC, 32.74% (by length) is intermittent [% in USA = 36.62, % in Region = 6.94]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

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  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu