Oak Orchard-Twelvemile -- Cataloging Unit 04130001

• Southwestern Lake Ontario Subregion 0413
  
• 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 2711.8 km² ( 1047.5 mi² ) [% in USA = 39.93, % in Region = 58.56]
  The area from the USGS is 1040 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 764)

  IV. Elevation Analysis

  This analysis is based on 1082744 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 137.1 m ( 449.8 ft ) [% in USA = 18.81, % in Region = 5.41]
  The elevation standard deviation is 45.4 m ( 148.9 ft ) [% in USA = 36.19, % in Region = 59.46]
  The coefficient of variation is 33.1 %.
  The vertical relief is 199.0 m ( 652.9 ft ) [% in USA = 28.47, % in Region = 45.95]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	75.0	90.9	93.0	106.0	107.3	120.0	141.0	169.5	192.0	198.0	274.0
  feet	246.1	298.2	305.1	347.8	352.0	393.7	462.6	556.1	629.9	649.6	898.9

  

  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	230.8	143.5	0.085	0.137	50.12	23.42
  Intermittent Shoreline	0.4	0.3	0.000	0.000	33.06	52.25
  Perennial Streams	1086.4	675.2	0.401	0.645	70.30	63.06
  Intermittent Streams	591.0	367.3	0.218	0.351	33.92	65.77
  Canals	111.3	69.2	0.041	0.066	82.28	78.38
  1° roads	128.8	80.1	0.048	0.076	88.68	74.77
  2° roads	0.0	0.0	0.000	0.000	15.35	15.32
  3° roads	814.4	506.2	0.300	0.483	98.63	100.00
  4° roads	3716.2	2309.6	1.370	2.205	70.25	50.45
  Total Roads	4659.4	2895.8	1.718	2.765	81.24	62.16
  Railroads	282.1	175.3	0.104	0.167	88.25	69.37
  Pipes and Powerlines	65.4	40.7	0.024	0.039	43.72	40.54

  
  Of the natural water in this HUC, 30.99% (by length) is intermittent [% in USA = 34.86, % in Region = 71.17]

  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