Blackwater-Wicomico -- Cataloging Unit 02060007

• Upper Chesapeake Subregion 0206
  
• Mid-Atlantic Region 02 (There are 95 cataloging units in this region.)
  The state composition by area is 99.6% Maryland, 0.4% Delaware.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1600.4 km² ( 618.2 mi² ) [% in USA = 10.42, % in Region = 15.79]
  The area from the USGS is 537 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1497)

  IV. Elevation Analysis

  This analysis is based on 638982 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 3.3 m ( 10.8 ft ) [% in USA = 1.14, % in Region = 5.26]
  The elevation standard deviation is 4.6 m ( 15.1 ft ) [% in USA = 2.13, % in Region = 8.42]
  The coefficient of variation is 139.4 %.
  The vertical relief is 28.0 m ( 91.9 ft ) [% in USA = 2.23, % in Region = 10.53]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	0.0	0.0	0.0	0.0	1.0	3.0	4.6	6.0	11.0	28.0
  feet	0.0	0.0	0.0	0.0	0.0	3.3	9.8	15.1	19.7	36.1	91.9

  

  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	1080.0	671.2	0.675	1.086	98.20	94.74
  Intermittent Shoreline	0.7	0.4	0.000	0.001	42.97	77.89
  Perennial Streams	662.3	411.7	0.414	0.666	71.81	26.32
  Intermittent Streams	38.6	24.0	0.024	0.039	9.76	43.16
  Canals	7.7	4.8	0.005	0.008	58.17	67.37
  1° roads	29.5	18.3	0.018	0.030	67.31	29.47
  2° roads	63.5	39.5	0.040	0.064	70.44	45.26
  3° roads	188.9	117.4	0.118	0.190	77.74	38.95
  4° roads	2328.4	1447.1	1.455	2.341	75.94	44.21
  Total Roads	2610.2	1622.2	1.631	2.624	76.88	41.05
  Railroads	61.2	38.1	0.038	0.062	47.42	17.89
  Pipes and Powerlines	58.5	36.3	0.037	0.059	58.12	33.68

  
  Of the natural water in this HUC, 2.21% (by length) is intermittent [% in USA = 7.39, % in Region = 37.89]

  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