Buffalo -- Cataloging Unit 08060206

• Big Black - Homochitto Accounting Unit 080602
  
• Lower Mississippi - Big Black Subregion 0806
  
• Lower Mississippi Region 08 (There are 82 cataloging units in this region.)
  The state composition by area is 100.0% Mississippi.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 957.4 km² ( 369.8 mi² ) [% in USA = 4.12, % in Region = 6.10]
  The area from the USGS is 343 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 348)

  IV. Elevation Analysis

  This analysis is based on 382102 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 61.6 m ( 202.1 ft ) [% in USA = 10.14, % in Region = 54.88]
  The elevation standard deviation is 32.9 m ( 107.9 ft ) [% in USA = 24.73, % in Region = 86.59]
  The coefficient of variation is 53.4 %.
  The vertical relief is 129.9 m ( 426.2 ft ) [% in USA = 14.54, % in Region = 71.95]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	7.1	14.0	28.1	44.0	51.2	60.0	74.1	79.7	91.0	106.0	137.0
  feet	23.3	45.9	92.2	144.4	168.0	196.8	243.1	261.5	298.6	347.8	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	88.2	54.8	0.092	0.148	52.96	32.93
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	30.49
  Perennial Streams	440.9	274.0	0.460	0.741	77.88	79.27
  Intermittent Streams	429.4	266.8	0.448	0.722	63.33	53.66
  Canals	0.0	0.0	0.000	0.000	35.62	9.76
  1° roads	0.0	0.0	0.000	0.000	30.84	7.32
  2° roads	25.5	15.8	0.027	0.043	52.01	34.15
  3° roads	48.8	30.4	0.051	0.082	47.37	7.32
  4° roads	685.6	426.1	0.716	1.152	17.81	10.98
  Total Roads	759.9	472.3	0.794	1.277	18.85	7.32
  Railroads	2.2	1.3	0.002	0.004	15.30	2.44
  Pipes and Powerlines	2.4	1.5	0.003	0.004	13.45	3.66

  
  Of the natural water in this HUC, 44.79% (by length) is intermittent [% in USA = 47.23, % in Region = 56.10]

  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