Lower Black Warrior -- Cataloging Unit 03160113

• Black Warrior - Tombigbee Accounting Unit 031601
  
• Mobile - Tombigbee Subregion 0316
  
• South Atlantic-Gulf Region 03 (There are 198 cataloging units in this region.)
  The state composition by area is 100.0% Alabama.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3772.2 km² ( 1457.1 mi² ) [% in USA = 61.44, % in Region = 63.64]
  The area from the USGS is 1450 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 2321)

  IV. Elevation Analysis

  This analysis is based on 1506487 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 67.6 m ( 221.8 ft ) [% in USA = 11.08, % in Region = 51.52]
  The elevation standard deviation is 31.4 m ( 103.0 ft ) [% in USA = 22.88, % in Region = 62.63]
  The coefficient of variation is 46.4 %.
  The vertical relief is 194.7 m ( 638.8 ft ) [% in USA = 27.62, % in Region = 71.72]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	12.0	29.9	36.7	45.0	55.2	61.7	75.9	88.1	92.8	112.5	206.7
  feet	39.4	98.1	120.4	147.6	181.1	202.4	249.0	289.0	304.5	369.1	678.1

  

  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	1160.9	721.5	0.308	0.495	91.00	78.28
  Intermittent Shoreline	12.6	7.8	0.003	0.005	71.67	78.28
  Perennial Streams	1460.6	907.8	0.387	0.623	68.74	38.89
  Intermittent Streams	1635.6	1016.6	0.434	0.698	62.20	84.85
  Canals	0.0	0.0	0.000	0.000	35.62	41.41
  1° roads	86.9	54.0	0.023	0.037	73.09	59.60
  2° roads	177.2	110.2	0.047	0.076	79.35	46.97
  3° roads	281.6	175.0	0.075	0.120	62.67	22.73
  4° roads	4173.6	2593.9	1.106	1.780	45.67	16.16
  Total Roads	4719.4	2933.1	1.251	2.013	47.23	13.13
  Railroads	222.9	138.5	0.059	0.095	66.18	49.49
  Pipes and Powerlines	348.8	216.8	0.092	0.149	92.52	79.80

  
  Of the natural water in this HUC, 38.60% (by length) is intermittent [% in USA = 41.92, % in Region = 76.77]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

  ---

  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu