Lower Mississippi-Memphis -- Cataloging Unit 08010100

• Lower Mississippi-Hatchie Subregion 0801
  
• Lower Mississippi Region 08 (There are 82 cataloging units in this region.)
  The state composition by area is 44.5% Tennessee, 23.0% Missouri, 19.2% Arkansas, 12.8% Kentucky, 0.6% Mississippi.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3374.4 km² ( 1303.4 mi² ) [% in USA = 53.24, % in Region = 58.54]
  The area from the USGS is 1110 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1745)

  IV. Elevation Analysis

  This analysis is based on 1349728 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 80.5 m ( 264.1 ft ) [% in USA = 12.55, % in Region = 68.29]
  The elevation standard deviation is 15.9 m ( 52.2 ft ) [% in USA = 7.67, % in Region = 39.02]
  The coefficient of variation is 19.8 %.
  The vertical relief is 105.0 m ( 344.5 ft ) [% in USA = 9.47, % in Region = 47.56]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	53.0	63.0	68.0	73.0	76.0	77.4	82.0	85.5	90.0	94.0	158.0
  feet	173.9	206.7	223.1	239.5	249.3	253.9	269.0	280.5	295.3	308.4	518.4

  

  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	1917.4	1191.6	0.568	0.914	97.21	84.15
  Intermittent Shoreline	177.2	110.1	0.053	0.084	97.06	98.78
  Perennial Streams	479.9	298.2	0.142	0.229	31.12	10.98
  Intermittent Streams	777.7	483.3	0.230	0.371	35.58	30.49
  Canals	484.7	301.2	0.144	0.231	95.50	69.51
  1° roads	40.2	25.0	0.012	0.019	57.65	52.44
  2° roads	51.8	32.2	0.015	0.025	35.39	17.07
  3° roads	351.9	218.7	0.104	0.168	74.18	31.71
  4° roads	2551.0	1585.5	0.756	1.216	19.56	13.41
  Total Roads	2994.9	1861.4	0.888	1.428	23.78	12.20
  Railroads	122.4	76.0	0.036	0.058	45.14	26.83
  Pipes and Powerlines	48.4	30.1	0.014	0.023	30.36	13.41

  
  Of the natural water in this HUC, 28.49% (by length) is intermittent [% in USA = 32.26, % in Region = 35.37]

  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