Ghowan -- Cataloging Unit 03010203

• Albemarle-Chowan Accounting Unit 030102
  
• Chowan-Roanoke Subregion 0301
  
• South Atlantic-Gulf Region 03 (There are 198 cataloging units in this region.)
  The state composition by area is 89.6% North Carolina, 10.4% Virginia.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2355.7 km² ( 909.9 mi² ) [% in USA = 29.37, % in Region = 32.83]
  The area from the USGS is 857 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 706)

  IV. Elevation Analysis

  This analysis is based on 940553 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 10.4 m ( 34.1 ft ) [% in USA = 2.84, % in Region = 12.12]
  The elevation standard deviation is 5.9 m ( 19.4 ft ) [% in USA = 2.70, % in Region = 10.10]
  The coefficient of variation is 56.7 %.
  The vertical relief is 30.9 m ( 101.4 ft ) [% in USA = 2.56, % in Region = 10.61]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	2.0	5.5	7.0	8.0	10.2	12.0	14.8	15.0	17.0	30.9
  feet	0.0	6.6	18.0	23.0	26.2	33.5	39.4	48.6	49.2	55.8	101.4

  

  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	338.0	210.1	0.143	0.231	70.01	40.40
  Intermittent Shoreline	0.1	0.1	0.000	0.000	29.99	35.86
  Perennial Streams	783.0	486.6	0.332	0.535	62.01	28.79
  Intermittent Streams	630.0	391.5	0.267	0.430	40.22	60.10
  Canals	33.8	21.0	0.014	0.023	69.73	74.24
  1° roads	0.1	0.0	0.000	0.000	31.41	12.63
  2° roads	122.1	75.9	0.052	0.083	84.13	54.55
  3° roads	242.8	150.9	0.103	0.166	73.85	44.44
  4° roads	2515.6	1563.4	1.068	1.718	42.21	9.09
  Total Roads	2880.5	1790.3	1.223	1.967	44.81	9.60
  Railroads	104.7	65.1	0.044	0.072	53.53	25.25
  Pipes and Powerlines	102.2	63.5	0.043	0.070	64.99	29.29

  
  Of the natural water in this HUC, 35.98% (by length) is intermittent [% in USA = 39.32, % in Region = 72.73]

  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