Irondequoit-Ninemile -- Cataloging Unit 04140101

• Southeastern Lake Ontario Accounting Unit 041401
  
• Southeastern Lake Ontario Subregion 0414
  
• Great Lakes Region 04 (There are 111 cataloging units in this region.)
  The state composition by area is 100.0% New York.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1841.7 km² ( 711.4 mi² ) [% in USA = 15.02, % in Region = 27.03]
  The area from the USGS is 708 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 777)

  IV. Elevation Analysis

  This analysis is based on 736264 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 132.2 m ( 433.7 ft ) [% in USA = 18.33, % in Region = 4.50]
  The elevation standard deviation is 32.6 m ( 107.0 ft ) [% in USA = 24.44, % in Region = 41.44]
  The coefficient of variation is 24.7 %.
  The vertical relief is 202.0 m ( 662.7 ft ) [% in USA = 29.09, % in Region = 47.75]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	75.0	91.0	101.0	117.3	122.0	126.1	137.9	151.0	152.0	174.5	277.0
  feet	246.1	298.6	331.4	384.8	400.3	413.7	452.4	495.4	498.7	572.5	908.8

  

  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	199.6	124.0	0.108	0.174	58.74	27.93
  Intermittent Shoreline	0.8	0.5	0.000	0.001	42.35	62.16
  Perennial Streams	1019.2	633.5	0.553	0.890	87.30	87.39
  Intermittent Streams	62.0	38.5	0.034	0.054	11.04	22.52
  Canals	9.1	5.7	0.005	0.008	58.41	63.96
  1° roads	162.7	101.1	0.088	0.142	96.02	86.49
  2° roads	0.0	0.0	0.000	0.000	15.35	15.32
  3° roads	432.6	268.9	0.235	0.378	95.26	93.69
  4° roads	4432.7	2755.0	2.407	3.873	95.64	90.99
  Total Roads	5028.0	3124.9	2.730	4.393	96.16	90.99
  Railroads	257.7	160.2	0.140	0.225	94.46	79.28
  Pipes and Powerlines	32.8	20.4	0.018	0.029	35.39	31.53

  
  Of the natural water in this HUC, 4.90% (by length) is intermittent [% in USA = 10.71, % in Region = 21.62]

  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