Bayou D'arbonne -- Cataloging Unit 08040206

• Lower Ouachita Accounting Unit 080402
  
• Lower Red - Ouachita Subregion 0804
  
• Lower Mississippi Region 08 (There are 82 cataloging units in this region.)
  The state composition by area is 77.0% Louisiana, 23.0% Arkansas.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4927.1 km² ( 1903.2 mi² ) [% in USA = 77.12, % in Region = 85.37]
  The area from the USGS is 1930 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1411)

  IV. Elevation Analysis

  This analysis is based on 1967922 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 64.2 m ( 210.6 ft ) [% in USA = 10.56, % in Region = 59.76]
  The elevation standard deviation is 19.3 m ( 63.3 ft ) [% in USA = 10.28, % in Region = 53.66]
  The coefficient of variation is 30.1 %.
  The vertical relief is 122.0 m ( 400.3 ft ) [% in USA = 12.84, % in Region = 65.85]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	15.0	40.0	45.9	56.3	60.0	62.6	70.3	75.6	78.3	91.0	137.0
  feet	49.2	131.2	150.6	184.7	196.8	205.4	230.6	248.0	256.9	298.6	449.5

  

  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	430.8	267.8	0.087	0.141	51.21	30.49
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	30.49
  Perennial Streams	1944.4	1208.5	0.395	0.635	69.73	68.29
  Intermittent Streams	1737.9	1080.1	0.353	0.568	51.02	46.34
  Canals	3.0	1.9	0.001	0.001	42.63	17.07
  1° roads	55.0	34.2	0.011	0.018	56.47	47.56
  2° roads	165.0	102.5	0.033	0.054	62.25	48.78
  3° roads	889.4	552.8	0.181	0.290	89.86	74.39
  4° roads	5833.1	3625.3	1.184	1.905	52.30	64.63
  Total Roads	6942.5	4314.8	1.409	2.267	62.10	67.07
  Railroads	148.5	92.3	0.030	0.048	39.89	18.29
  Pipes and Powerlines	325.4	202.3	0.066	0.106	82.19	75.61

  
  Of the natural water in this HUC, 42.25% (by length) is intermittent [% in USA = 44.95, % in Region = 52.44]

  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