Floyd -- Cataloging Unit 10230002

• 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 2365.3 km² ( 913.6 mi² ) [% in USA = 29.99, % in Region = 23.23]
  The area from the USGS is 902 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 226)

  IV. Elevation Analysis

  This analysis is based on 944618 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 419.4 m ( 1376.0 ft ) [% in USA = 51.54, % in Region = 16.77]
  The elevation standard deviation is 27.2 m ( 89.2 ft ) [% in USA = 19.00, % in Region = 4.19]
  The coefficient of variation is 6.5 %.
  The vertical relief is 152.9 m ( 501.6 ft ) [% in USA = 18.66, % in Region = 4.52]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	329.1	381.0	396.0	410.7	417.0	426.0	427.0	432.6	441.9	449.1	482.0
  feet	1079.7	1250.0	1299.2	1347.4	1368.1	1397.6	1400.9	1419.3	1449.8	1473.4	1581.3

  

  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	20.9	13.0	0.009	0.014	11.46	9.68
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	8.71
  Perennial Streams	434.3	269.9	0.184	0.295	37.52	63.87
  Intermittent Streams	1103.7	685.9	0.467	0.751	65.37	37.74
  Canals	0.0	0.0	0.000	0.000	35.62	43.55
  1° roads	1.0	0.6	0.000	0.001	38.04	54.52
  2° roads	131.3	81.6	0.056	0.089	86.83	95.16
  3° roads	142.0	88.2	0.060	0.097	54.95	77.74
  4° roads	3280.9	2039.1	1.387	2.232	71.25	95.48
  Total Roads	3555.2	2209.6	1.503	2.418	68.64	95.16
  Railroads	290.9	180.8	0.123	0.198	92.09	97.74
  Pipes and Powerlines	101.5	63.1	0.043	0.069	64.42	81.94

  
  Of the natural water in this HUC, 70.80% (by length) is intermittent [% in USA = 70.58, % in Region = 42.90]

  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