Upper Dan -- Cataloging Unit 03010103

• Roanoke Accounting Unit 030101
  
• Chowan-Roanoke Subregion 0301
  
• South Atlantic-Gulf Region 03 (There are 198 cataloging units in this region.)
  The state composition by area is 56.2% Virginia, 43.8% North Carolina.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5327.9 km² ( 2058.0 mi² ) [% in USA = 81.57, % in Region = 84.34]
  The area from the USGS is 2040 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 2578)

  IV. Elevation Analysis

  This analysis is based on 2128140 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 314.6 m ( 1032.1 ft ) [% in USA = 40.50, % in Region = 94.44]
  The elevation standard deviation is 141.8 m ( 465.2 ft ) [% in USA = 63.00, % in Region = 95.96]
  The coefficient of variation is 45.1 %.
  The vertical relief is 942.1 m ( 3090.8 ft ) [% in USA = 64.28, % in Region = 94.44]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	124.0	189.7	214.0	243.0	251.6	274.2	304.0	335.0	370.2	459.6	1066.1
  feet	406.8	622.4	702.1	797.2	825.4	899.6	997.4	1099.1	1214.6	1507.9	3497.7

  

  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	742.0	461.1	0.139	0.224	68.59	38.38
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	29.80
  Perennial Streams	3303.2	2053.0	0.620	0.998	92.94	94.44
  Intermittent Streams	1329.4	826.2	0.250	0.401	38.04	57.58
  Canals	0.1	0.1	0.000	0.000	36.29	42.42
  1° roads	39.2	24.3	0.007	0.012	51.68	27.78
  2° roads	298.0	185.2	0.056	0.090	87.21	62.63
  3° roads	631.2	392.3	0.118	0.191	77.97	59.09
  4° roads	9230.5	5736.8	1.732	2.788	87.78	74.75
  Total Roads	10198.8	6338.6	1.914	3.080	87.40	74.75
  Railroads	268.8	167.1	0.050	0.081	59.40	37.88
  Pipes and Powerlines	497.7	309.3	0.093	0.150	92.80	80.81

  
  Of the natural water in this HUC, 24.73% (by length) is intermittent [% in USA = 28.90, % in Region = 50.00]

  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