Upper Yellowstone-Pompeys Pillar -- Cataloging Unit 10070007

• Upper Yellowstone Subregion 1007
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 100.0% Montana.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5198.2 km² ( 2007.9 mi² ) [% in USA = 80.20, % in Region = 73.87]
  The area from the USGS is 2000 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 367)

  IV. Elevation Analysis

  This analysis is based on 2075573 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1042.9 m ( 3421.5 ft ) [% in USA = 73.24, % in Region = 62.58]
  The elevation standard deviation is 100.0 m ( 328.1 ft ) [% in USA = 55.61, % in Region = 59.03]
  The coefficient of variation is 9.6 %.
  The vertical relief is 600.3 m ( 1969.5 ft ) [% in USA = 57.46, % in Region = 64.84]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	823.0	914.0	952.5	975.0	1006.0	1035.7	1053.5	1097.0	1153.1	1188.1	1423.3
  feet	2700.1	2998.7	3125.0	3198.8	3300.5	3397.9	3456.3	3599.0	3783.1	3897.9	4669.6

  

  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	455.1	282.9	0.088	0.141	51.26	70.65
  Intermittent Shoreline	44.9	27.9	0.009	0.014	83.23	67.10
  Perennial Streams	329.7	204.9	0.063	0.102	19.47	28.06
  Intermittent Streams	3418.3	2124.5	0.658	1.058	84.75	64.19
  Canals	328.7	204.3	0.063	0.102	87.83	90.00
  1° roads	140.4	87.3	0.027	0.043	77.21	89.68
  2° roads	50.7	31.5	0.010	0.016	27.29	27.74
  3° roads	33.5	20.9	0.006	0.010	7.86	12.90
  4° roads	4493.6	2792.8	0.864	1.391	26.72	44.52
  Total Roads	4718.3	2932.4	0.908	1.460	24.96	43.87
  Railroads	202.5	125.9	0.039	0.063	47.94	67.42
  Pipes and Powerlines	58.3	36.2	0.011	0.018	26.15	38.71

  
  Of the natural water in this HUC, 81.53% (by length) is intermittent [% in USA = 80.10, % in Region = 62.90]

  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