Lower Milk -- Cataloging Unit 10050012

• Milk Subregion 1005
  
• 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 4433.2 km² ( 1712.4 mi² ) [% in USA = 71.34, % in Region = 64.52]
  The area from the USGS is 1740 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 824)

  IV. Elevation Analysis

  This analysis is based on 1771862 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 737.1 m ( 2418.3 ft ) [% in USA = 65.18, % in Region = 41.29]
  The elevation standard deviation is 68.6 m ( 225.1 ft ) [% in USA = 46.99, % in Region = 43.55]
  The coefficient of variation is 9.3 %.
  The vertical relief is 343.8 m ( 1127.9 ft ) [% in USA = 44.05, % in Region = 39.68]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	600.2	657.1	670.0	700.0	705.3	731.0	739.6	762.0	792.5	836.3	944.0
  feet	1969.1	2155.8	2198.1	2296.6	2313.9	2398.3	2426.5	2500.0	2600.0	2743.7	3097.1

  

  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	363.8	226.1	0.082	0.132	49.41	68.39
  Intermittent Shoreline	78.4	48.7	0.018	0.028	91.05	81.29
  Perennial Streams	420.6	261.4	0.095	0.153	24.68	39.68
  Intermittent Streams	2327.8	1446.7	0.525	0.845	72.19	45.48
  Canals	105.7	65.7	0.024	0.038	76.08	75.81
  1° roads	0.0	0.0	0.000	0.000	30.84	48.39
  2° roads	82.6	51.3	0.019	0.030	40.36	48.06
  3° roads	61.8	38.4	0.014	0.022	15.16	23.87
  4° roads	3000.9	1865.1	0.677	1.089	15.44	24.52
  Total Roads	3145.4	1954.9	0.710	1.142	14.97	23.87
  Railroads	147.9	91.9	0.033	0.054	42.59	61.29
  Pipes and Powerlines	28.4	17.7	0.006	0.010	19.09	28.06

  
  Of the natural water in this HUC, 75.41% (by length) is intermittent [% in USA = 74.70, % in Region = 49.35]

  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