Roanoke Rapids -- Cataloging Unit 03010106

• 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 56.8% Virginia, 43.2% North Carolina.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1539.7 km² ( 594.7 mi² ) [% in USA = 9.52, % in Region = 10.61]
  The area from the USGS is 590 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 638)

  IV. Elevation Analysis

  This analysis is based on 615767 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 92.8 m ( 304.5 ft ) [% in USA = 14.50, % in Region = 63.64]
  The elevation standard deviation is 20.2 m ( 66.3 ft ) [% in USA = 11.46, % in Region = 37.88]
  The coefficient of variation is 21.8 %.
  The vertical relief is 148.8 m ( 488.2 ft ) [% in USA = 17.72, % in Region = 52.53]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	16.2	68.3	76.0	83.6	91.0	91.0	92.0	98.4	109.3	122.0	165.0
  feet	53.1	224.1	249.3	274.3	298.6	298.6	301.8	322.8	358.6	400.3	541.3

  

  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	594.8	369.7	0.386	0.622	93.79	85.86
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	29.80
  Perennial Streams	625.7	388.9	0.406	0.654	70.91	43.94
  Intermittent Streams	449.4	279.3	0.292	0.470	43.63	65.66
  Canals	0.0	0.0	0.000	0.000	35.62	41.41
  1° roads	41.1	25.5	0.027	0.043	77.03	66.16
  2° roads	72.6	45.1	0.047	0.076	79.58	47.47
  3° roads	91.8	57.1	0.060	0.096	54.57	12.12
  4° roads	2408.7	1497.0	1.564	2.517	81.38	67.17
  Total Roads	2614.1	1624.7	1.698	2.732	80.39	62.63
  Railroads	95.6	59.4	0.062	0.100	68.69	54.04
  Pipes and Powerlines	211.2	131.3	0.137	0.221	98.53	97.47

  
  Of the natural water in this HUC, 26.91% (by length) is intermittent [% in USA = 30.55, % in Region = 54.55]

  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