Brandywine-Christina -- Cataloging Unit 02040205

• Lower Delaware Accounting Unit 020402
  
• Delaware Subregion 0204
  
• Mid-Atlantic Region 02 (There are 95 cataloging units in this region.)
  The state composition by area is 51.9% Pennsylvania, 46.4% Delaware, 1.1% Maryland, 0.6% New Jersey.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1968.7 km² ( 760.4 mi² ) [% in USA = 19.04, % in Region = 24.21]
  The area from the USGS is 745 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 2355)

  IV. Elevation Analysis

  This analysis is based on 786552 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 88.9 m ( 291.7 ft ) [% in USA = 13.93, % in Region = 36.84]
  The elevation standard deviation is 65.6 m ( 215.2 ft ) [% in USA = 46.09, % in Region = 38.95]
  The coefficient of variation is 73.8 %.
  The vertical relief is 304.0 m ( 997.4 ft ) [% in USA = 41.64, % in Region = 34.74]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	15.0	15.0	26.0	63.2	91.0	109.5	122.0	152.0	182.2	304.0
  feet	0.0	49.2	49.2	85.3	207.3	298.6	359.2	400.3	498.7	597.8	997.4

  

  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	434.3	269.9	0.221	0.355	83.14	64.21
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	49.47
  Perennial Streams	978.5	608.1	0.497	0.800	81.62	48.42
  Intermittent Streams	19.1	11.9	0.010	0.016	6.49	31.58
  Canals	8.4	5.2	0.004	0.007	56.80	65.26
  1° roads	177.8	110.5	0.090	0.145	96.12	77.89
  2° roads	223.7	139.0	0.114	0.183	99.29	96.84
  3° roads	670.8	416.9	0.341	0.548	99.53	98.95
  4° roads	5944.2	3694.3	3.019	4.858	97.73	85.26
  Total Roads	7016.5	4360.8	3.564	5.735	97.96	87.37
  Railroads	443.2	275.5	0.225	0.362	98.39	93.68
  Pipes and Powerlines	0.0	0.0	0.000	0.000	8.67	5.26

  
  Of the natural water in this HUC, 1.33% (by length) is intermittent [% in USA = 5.78, % in Region = 32.63]

  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