Bronx -- Cataloging Unit 02030102

• Lower Hudson Accounting Unit 020301
  
• Lower Hudson-Long Island Subregion 0203
  
• Mid-Atlantic Region 02 (There are 95 cataloging units in this region.)
  The state composition by area is 99.7% New York, 0.3% Connecticut.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 514.0 km² ( 198.6 mi² ) [% in USA = 1.42, % in Region = 2.11]
  The area from the USGS is 190 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1476)

  IV. Elevation Analysis

  This analysis is based on 205165 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 52.3 m ( 171.6 ft ) [% in USA = 8.62, % in Region = 30.53]
  The elevation standard deviation is 41.6 m ( 136.5 ft ) [% in USA = 33.02, % in Region = 32.63]
  The coefficient of variation is 79.5 %.
  The vertical relief is 183.0 m ( 600.4 ft ) [% in USA = 25.77, % in Region = 28.42]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	4.4	14.0	18.9	30.0	45.0	59.8	72.5	90.9	117.7	183.0
  feet	0.0	14.4	45.9	62.0	98.4	147.6	196.2	237.9	298.2	386.2	600.4

  

  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	283.0	175.9	0.551	0.886	96.83	92.63
  Intermittent Shoreline	5.8	3.6	0.011	0.018	86.55	97.89
  Perennial Streams	175.8	109.2	0.342	0.550	63.24	9.47
  Intermittent Streams	0.4	0.2	0.001	0.001	2.79	15.79
  Canals	5.1	3.2	0.010	0.016	66.37	81.05
  1° roads	356.7	221.7	0.694	1.116	100.00	100.00
  2° roads	43.3	26.9	0.084	0.135	97.11	87.37
  3° roads	125.0	77.7	0.243	0.391	95.83	90.53
  4° roads	4519.9	2809.1	8.793	14.148	99.95	100.00
  Total Roads	5044.9	3135.4	9.814	15.791	100.00	100.00
  Railroads	148.5	92.3	0.289	0.465	99.57	97.89
  Pipes and Powerlines	1.0	0.6	0.002	0.003	12.55	7.37

  
  Of the natural water in this HUC, 1.34% (by length) is intermittent [% in USA = 5.83, % in Region = 33.68]

  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