Lower Roanoke -- Cataloging Unit 03010107

• 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 100.0% North Carolina.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3388.5 km² ( 1308.9 mi² ) [% in USA = 53.67, % in Region = 54.04]
  The area from the USGS is 1290 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 725)

  IV. Elevation Analysis

  This analysis is based on 1353335 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 16.4 m ( 53.8 ft ) [% in USA = 4.36, % in Region = 20.71]
  The elevation standard deviation is 13.1 m ( 43.0 ft ) [% in USA = 6.44, % in Region = 26.26]
  The coefficient of variation is 79.9 %.
  The vertical relief is 101.7 m ( 333.7 ft ) [% in USA = 8.91, % in Region = 36.87]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	4.0	9.0	10.0	12.0	15.0	15.0	15.0	23.0	30.0	101.7
  feet	0.0	13.1	29.5	32.8	39.4	49.2	49.2	49.2	75.5	98.4	333.7

  

  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	865.4	537.8	0.255	0.411	86.45	68.69
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	29.80
  Perennial Streams	1221.0	758.9	0.360	0.580	65.47	34.34
  Intermittent Streams	1104.7	686.6	0.326	0.525	48.60	70.71
  Canals	40.9	25.4	0.012	0.019	68.17	72.22
  1° roads	28.4	17.7	0.008	0.013	52.82	30.30
  2° roads	203.6	126.5	0.060	0.097	89.72	69.19
  3° roads	380.2	236.3	0.112	0.181	76.50	54.04
  4° roads	3839.1	2386.0	1.133	1.823	47.61	17.17
  Total Roads	4451.3	2766.5	1.314	2.114	52.63	17.68
  Railroads	242.2	150.6	0.071	0.115	74.42	66.67
  Pipes and Powerlines	142.1	88.3	0.042	0.067	63.43	27.78

  
  Of the natural water in this HUC, 34.62% (by length) is intermittent [% in USA = 37.99, % in Region = 69.70]

  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