Horn Lake-Nonconnah -- Cataloging Unit 08010211

• Hatchie-Obion Accounting Unit 080102
  
• Lower Mississippi-Hatchie Subregion 0801
  
• Lower Mississippi Region 08 (There are 82 cataloging units in this region.)
  The state composition by area is 73.0% Tennessee, 26.9% Mississippi, 0.1% Arkansas.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 704.8 km² ( 272.2 mi² ) [% in USA = 2.51, % in Region = 4.88]
  The area from the USGS is 281 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1037)

  IV. Elevation Analysis

  This analysis is based on 282297 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 91.1 m ( 298.9 ft ) [% in USA = 14.21, % in Region = 75.61]
  The elevation standard deviation is 17.8 m ( 58.4 ft ) [% in USA = 8.91, % in Region = 47.56]
  The coefficient of variation is 19.5 %.
  The vertical relief is 80.4 m ( 263.8 ft ) [% in USA = 6.63, % in Region = 31.71]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	54.0	63.4	75.8	83.0	89.6	91.0	93.0	100.4	108.9	116.0	134.4
  feet	177.2	208.0	248.7	272.3	294.0	298.6	305.1	329.4	357.3	380.6	440.9

  

  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	102.0	63.4	0.145	0.233	70.44	48.78
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	30.49
  Perennial Streams	215.5	134.0	0.306	0.492	57.65	47.56
  Intermittent Streams	7.6	4.7	0.011	0.017	6.92	4.88
  Canals	4.2	2.6	0.006	0.009	60.11	29.27
  1° roads	93.1	57.9	0.132	0.213	97.96	100.00
  2° roads	89.4	55.5	0.127	0.204	99.43	100.00
  3° roads	63.3	39.4	0.090	0.145	69.49	20.73
  4° roads	2754.5	1711.9	3.908	6.288	98.67	100.00
  Total Roads	3000.3	1864.7	4.257	6.849	98.67	100.00
  Railroads	180.7	112.3	0.256	0.412	99.24	100.00
  Pipes and Powerlines	5.7	3.5	0.008	0.013	21.74	9.76

  
  Of the natural water in this HUC, 2.33% (by length) is intermittent [% in USA = 7.63, % in Region = 7.32]

  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