05531175

IRVING PARK ROAD IRVING PARK ROAD

ELIZABETH LIZABETH DRIVE

ADDISON

 ROAD

ADDISON

ROAD

WOOD DALE ROAD WOOD DALE ROAD

CHICAGO, MILWAUKEE, ST. PAUL & PACIFIC RAILROAD

CHICAGO, MILWAUKEE, ST. PAUL & PACIFIC RAILROAD

19

Creek

Salt

UNCERTAINTIES AND LIMITATIONS FOR USE OF FLOOD-INUNDATION MAPS

Although the flood-inundation maps represent the boundaries of inundated areas with a distinct line, some uncertainty is associated with these maps. The flood boundaries shown were estimated based on gage heights (water-surface elevations) and streamflows at a selected USGS streamgage. Water-surface 

elevations along the stream reaches were estimated by hydraulic modeling, assuming unobstructed flow, and using gage height and hydrologic conditions anticipated at the USGS streamgage. Unique meteorological factors (timing and distribution of precipitation) may cause actual streamflows along the modeled 

reach to vary from those assumed during a flood, which may lead to deviations in the water-surface elevations and inundation boundaries shown. Additional areas may be flooded due to unanticipated conditions such as: changes in the streambed elevation or roughness, backwater into major tributaries along a main 

stem river, or backwater from localized debris or ice jams. The hydraulic model reflects the land-cover characteristics and any bridge, dam, levee, or other hydraulic structures existing in 2010. The accuracy of the floodwater extent portrayed on these maps will vary with the accuracy of the digital elevation model used 

to simulate the land surface. Additional uncertainties and limitations pertinent to this study are described in the document accompanying this set of flood inundation map plates.

Inundated areas shown should not be used for navigation, regulatory, permitting, or other legal purposes. Although USGS intends to make this server available 24 hours a day, 7 days a week, timely delivery of data and products from this server through the Internet is not guaranteed. The USGS provides these 

maps “as-is” for a quick reference, emergency planning tool but assumes no legal liability or responsibility resulting from the use of this information.

0.25 0 0.25 MILE

0.25 0 0.25 KILOMETER

SCALE 1:6 500

NORTH AMERICAN VERTICAL DATUM 1988 (NAVD88)

87°59’40”

41°58’00” 41°58’00”

41°57’40” 41°57’40”

41°57’20” 41°57’20”

87°59’40”

87°59’20”

87°59’20”

87°59’00”

87°59’00”

Study

area

ILLINOIS

EXPLANATION

19

05531175 05531175

Flood-inundation area

Limits of study area

USGS streamgage and number

State route marker

Flow arrow—Indicates direction of water flow

Projection: Transverse Mercator

North American Datum of 1983 (NAD83)

Orthography from the Illinois Natural Resources

Geospatial Data Clearinghouse, accessed in 2005 at

http://www.isgs.uiuc.edu/nsdihome/webdocs/cua05/

U.S. Department of the Interior

U.S. Geological Survey

Prepared in cooperation with the

DuPage County Stormwater Management Division

Scientific Investigations Map 3185

Sheet 9 of 14

Pamphlet accompanies map

Flood-Inundation Map for a 1.6-Mile Reach of Salt Creek

Corresponding to a Gage Height of 15.0 feet at U.S. Geological Survey

Streamgage Number 05531175 at Wood Dale, Illinois

By

Publishing support provided by:

Denver Publishing Service Center

Manuscript approved for publication Oct. 12, 2011

For more information concerning

this publication, contact:

Director, Illinois Water Science Center

U.S. Geological Survey

1201 W. University Avenue, Suite 100

Urbana IL 61801

(217) 328-8747

Or visit the Illinois Water Science Center Web site at:

http://il.water.usgs.gov/

This report is available at: http://pubs.usgs.gov/sim/3185

Any use of trade, product, or firm names is

for descriptive purposes only and does not

imply endorsement by the U.S. Government

This and other USGS information products are available at:

http://store.usgs.gov/

U.S. Geological Survey, Box 25286

Denver Federal Center, Denver, CO 80225

To learn about the USGS and its information products visit

http://www.usgs.gov/

1-888-ASK-USGS

David T. Soong, Elizabeth A. Murphy, and Jennifer B. Sharpe

2012

Suggested citation:

Soong, D.T., Murphy, E.A., and Sharpe, J.B., 2012, Flood-inundation maps for a 

1.6-mile reach of Salt Creek, Wood Dale, Illinois: U.S. Geological Survey 

Scientific Investigations Map 3185, 8 p. pamphlet, 14 map sheets, scale 1:6,500.