Middle Roanoke -- Cataloging Unit 03010102

• 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 83.7% Virginia, 16.3% North Carolina.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4593.3 km² ( 1774.3 mi² ) [% in USA = 72.81, % in Region = 77.27]
  The area from the USGS is 1750 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1578)

  IV. Elevation Analysis

  This analysis is based on 1835044 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 150.8 m ( 494.7 ft ) [% in USA = 20.27, % in Region = 80.30]
  The elevation standard deviation is 40.6 m ( 133.2 ft ) [% in USA = 32.02, % in Region = 77.78]
  The coefficient of variation is 26.9 %.
  The vertical relief is 335.0 m ( 1099.1 ft ) [% in USA = 43.53, % in Region = 86.36]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	61.0	101.7	121.4	122.0	131.9	150.7	152.0	165.0	183.0	213.0	396.0
  feet	200.1	333.7	398.3	400.3	432.7	494.4	498.7	541.3	600.4	698.8	1299.2

  

  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	1440.8	895.5	0.314	0.505	91.24	79.29
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	29.80
  Perennial Streams	2346.5	1458.4	0.511	0.822	83.14	69.19
  Intermittent Streams	1252.3	778.3	0.273	0.439	41.07	62.12
  Canals	0.0	0.0	0.000	0.000	35.62	41.41
  1° roads	18.6	11.6	0.004	0.007	46.85	23.74
  2° roads	201.5	125.2	0.044	0.071	75.79	40.91
  3° roads	291.2	181.0	0.063	0.102	56.94	15.66
  4° roads	6490.0	4033.6	1.413	2.273	72.76	50.00
  Total Roads	7001.3	4351.3	1.524	2.452	70.30	41.92
  Railroads	350.5	217.8	0.076	0.123	77.17	75.25
  Pipes and Powerlines	262.6	163.2	0.057	0.092	76.65	41.41

  
  Of the natural water in this HUC, 24.85% (by length) is intermittent [% in USA = 29.09, % in Region = 51.01]

  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