Maple -- Cataloging Unit 10230005

• Missouri-Little Sioux Subregion 1023
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 100.0% Iowa.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1930.7 km² ( 745.8 mi² ) [% in USA = 17.95, % in Region = 12.26]
  The area from the USGS is 747 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 193)

  IV. Elevation Analysis

  This analysis is based on 770659 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 412.1 m ( 1352.0 ft ) [% in USA = 50.92, % in Region = 16.45]
  The elevation standard deviation is 29.1 m ( 95.5 ft ) [% in USA = 21.13, % in Region = 6.45]
  The coefficient of variation is 7.1 %.
  The vertical relief is 163.8 m ( 537.4 ft ) [% in USA = 20.84, % in Region = 7.42]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	318.0	371.6	390.1	400.3	411.0	417.1	426.0	427.2	436.3	442.4	481.8
  feet	1043.3	1219.1	1279.8	1313.3	1348.4	1368.4	1397.6	1401.6	1431.4	1451.4	1580.7

  

  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	68.7	42.7	0.036	0.057	28.75	37.42
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	8.71
  Perennial Streams	772.0	479.8	0.400	0.643	70.20	93.23
  Intermittent Streams	1068.4	664.0	0.553	0.890	75.46	50.00
  Canals	0.0	0.0	0.000	0.000	35.62	43.55
  1° roads	0.0	0.0	0.000	0.000	30.84	48.39
  2° roads	56.7	35.2	0.029	0.047	55.80	68.71
  3° roads	129.4	80.4	0.067	0.108	59.17	82.58
  4° roads	2426.9	1508.3	1.257	2.023	59.59	87.42
  Total Roads	2613.0	1624.0	1.353	2.178	56.32	84.52
  Railroads	67.7	42.1	0.035	0.056	44.43	63.87
  Pipes and Powerlines	57.2	35.6	0.030	0.048	50.54	68.06

  
  Of the natural water in this HUC, 55.97% (by length) is intermittent [% in USA = 56.28, % in Region = 22.26]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

  ---

  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu