Lower Ouachita-Bayou De Loutre -- Cataloging Unit 08040202

• 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 53.9% Arkansas, 46.1% Louisiana.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3381.0 km² ( 1306.0 mi² ) [% in USA = 53.43, % in Region = 60.98]
  The area from the USGS is 1300 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1061)

  IV. Elevation Analysis

  This analysis is based on 1350700 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 38.9 m ( 127.6 ft ) [% in USA = 7.58, % in Region = 35.37]
  The elevation standard deviation is 16.4 m ( 53.8 ft ) [% in USA = 8.01, % in Region = 41.46]
  The coefficient of variation is 42.2 %.
  The vertical relief is 76.0 m ( 249.3 ft ) [% in USA = 6.35, % in Region = 30.49]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	15.0	19.0	22.0	25.6	30.8	37.0	43.7	46.7	55.6	61.0	91.0
  feet	49.2	62.3	72.2	84.0	101.0	121.4	143.4	153.2	182.4	200.1	298.6

  

  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	901.1	560.0	0.267	0.429	88.20	69.51
  Intermittent Shoreline	4.5	2.8	0.001	0.002	58.12	58.54
  Perennial Streams	703.4	437.2	0.208	0.335	41.07	20.73
  Intermittent Streams	1738.7	1080.6	0.514	0.827	70.96	60.98
  Canals	20.4	12.7	0.006	0.010	60.21	30.49
  1° roads	18.8	11.7	0.006	0.009	49.12	37.80
  2° roads	92.2	57.3	0.027	0.044	52.96	36.59
  3° roads	330.5	205.4	0.098	0.157	72.15	25.61
  4° roads	4040.8	2511.4	1.195	1.923	53.29	65.85
  Total Roads	4482.4	2785.8	1.326	2.133	53.77	53.66
  Railroads	195.6	121.6	0.058	0.093	64.99	58.54
  Pipes and Powerlines	233.7	145.2	0.069	0.111	84.23	79.27

  
  Of the natural water in this HUC, 52.07% (by length) is intermittent [% in USA = 52.91, % in Region = 62.20]

  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