Mermentau -- Cataloging Unit 08080202

• Calcasieu - Mermentau Accounting Unit 080802
  
• Louisiana Coastal Subregion 0808
  
• Lower Mississippi Region 08 (There are 82 cataloging units in this region.)
  The state composition by area is 100.0% Louisiana.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 6177.5 km² ( 2386.2 mi² ) [% in USA = 87.78, % in Region = 93.90]
  The area from the USGS is 2390 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 925)

  IV. Elevation Analysis

  This analysis is based on 2466969 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1.6 m ( 5.2 ft ) [% in USA = 0.76, % in Region = 9.76]
  The elevation standard deviation is 2.5 m ( 8.2 ft ) [% in USA = 0.99, % in Region = 10.98]
  The coefficient of variation is 156.2 %.
  The vertical relief is 15.0 m ( 49.2 ft ) [% in USA = 1.14, % in Region = 9.76]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	0.0	0.0	0.0	0.0	1.0	1.0	1.0	3.0	5.0	15.0
  feet	0.0	0.0	0.0	0.0	0.0	3.3	3.3	3.3	9.8	16.4	49.2

  

  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	3511.0	2182.1	0.568	0.914	97.25	85.37
  Intermittent Shoreline	1.0	0.6	0.000	0.000	33.40	40.24
  Perennial Streams	5172.8	3214.9	0.837	1.347	98.82	96.34
  Intermittent Streams	226.1	140.6	0.037	0.059	11.51	9.76
  Canals	995.6	618.8	0.161	0.259	95.93	70.73
  1° roads	46.3	28.8	0.007	0.012	51.78	41.46
  2° roads	64.5	40.1	0.010	0.017	28.04	8.54
  3° roads	858.8	533.7	0.139	0.224	82.99	52.44
  4° roads	4436.1	2757.1	0.718	1.155	17.95	12.20
  Total Roads	5405.7	3359.7	0.875	1.408	23.35	10.98
  Railroads	175.0	108.8	0.028	0.046	38.04	17.07
  Pipes and Powerlines	94.0	58.4	0.015	0.024	31.64	15.85

  
  Of the natural water in this HUC, 2.55% (by length) is intermittent [% in USA = 8.05, % in Region = 8.54]

  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