Larry D. Putnam 2001 Version 1.0, February 01, 2001 Digital map Rapid City, SD, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sd_lcsens_lz Larry D. Putnam 2000 Water Resources Information Report WRIR 00-4103 Rapid City, SD, USA U.S. Geological Survey This data set provides information for evaluation of streamflow loss as mechanism of transport of potential contaminants when assessing sensitivity of ground-water to contamination in Lawrence County, SD. This data set is a result of a larger work (WRIR 00-4103 cited above), which includes a paper plate titled: "Map showing drainage areas upstream from potential streamflow-loss zones and locations of selected streamflow-gaging stations in Lawrence County, SD." Streamflow loss is an important source of recharge to the Minnekahta, Minnelusa, and Madison aquifers. Water recharged from streamflow loss compared to direct infiltration of precipitation is more likely to enter rapid flowpaths through the unsaturated zone and aquifer media because of solution openings. This data set includes arcs that represent the stream reaches that cross the outcrops of the Minnekahta Limestone, Minnelusa Formation, and Madison Limestone that have potential to recharge the aquifers from streamflow loss. The source data includes digital data that characterizes the geology of the Black Hills area, which has been compiled at 1:100,000 scale and published in 1999 as part of the Black Hills Hydrology Study. USGS digital line graphs were used to describe the hydrography. The loss-zone data set has been archived at the USGS Water Resources National Spatial Data Information Node. This data set was created to provide the location of potential streamflow-loss zones to be used with a data set that describes drainage areas above potential stream-flow zones (see cross-reference information to obtain the drainage area digital data set). Attributes in the loss-zone data set relate the loss zone to respective drainage areas by a site identification number. These two data sets should be used conjunctively with a data set that evaluates sensitivity based on direct infiltration of precipitation (see cross-reference information to obtain the related digital data set) for a complete evaluation of ground-water sensitivity. The intended use of the sensitivity data sets is as a screening tool or preliminary assesment of ground-water sensitivity used in conjunction with other information and analysis. The map is not designed to replace the need for site-specific investigations or to be the sole criterion in making land-use decisions. The original paper map includes a losszone associated with drainage area 1. However, it was omitted from this digital map because the loss zones is actually outside the study area. This electronic report was subjected to the same review standard that applies to all U.S. Geological Survey reports. Reviewers were asked to check the topological consistency, tolerances, attribute frequencies and statistics, projection, and geographic extent. The reviewers checked the metadata for completeness and accuracy. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ARC/INFO format, this metadata file may include some ARC/INFO-specific terminology. 19990609 The loss zones are as current as the digital line graphs from which the location was derived. The hydrogeologic units map are from 1999 interpretations for the Black Hills Hydrology study. Complete None Planned -104.05086981 -103.56612549 44.49757848 44.29630335 None Contamination Ground water Sensitivity inlandWaters None Lawrence County South Dakota None A limitation that needs to be considered when using the data set is scale. The scale of the map is 1:100,000; therefore, the hydrogeologic information includes numerous generalizations. Modifying or overlaying the map at a scale that is more detailed than the original map may be misleading. Larry D. Putnam U.S. Geological Survey Hydrologist Mailing and physical address

1608 Mt. View Rd

Rapid City South Dakota 57702 USA 1-888-275-8747 (605) 355-4523 (ldputnam@usgs.gov) Compilation of this data set and the associated metadata was funded in cooperation with Lawrence County, SD and the City of Spearfish, SD. Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcInfo 8.1.0.415 Larry D. Putnam 2000 Digital map Rapid City, South Dakota, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sd_lcsens_pol Larry D. Putnam 2000 Digital map Rapid City, South Dakota, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sd_lcsens_da Multiple visual checks were done to verify that the attribute data was coincident with the original source map. Chain-node topology present. The digital map includes streamflow-loss zones as shown on PLATE 2 in USGS WRIR-004103. The physical accuracy of the source maps is unknown. Larry D. Putnam 2000 Digital map Water Resources Information Report USGS WRIR 00-4103 Rapid City, South Dakota, USA U.S. Geological Survey 100000 map 2000 This data is as current as the digital line graphs describing the hydrography as listed below. None This source provided the location of the loss zone arcs and associated information. Greg Jarrell, John Schleicher 2000 Digital map Open-File Report USGS OFR 00-471 Rapid City, South Dakota, USA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ofr00471_hydrogeo 100000 digital 1999 The surficial hydrogeology is as current as the base maps from which the information was derived. None This map was the original source for determining the intersection of streams with geologic outcrops. U.S. Geological Survey 19870619 Digital map Reston, VA, USA U.S. Geological Survey http://edc.usgs.gov/nsdi/html/dlg100/dlg100 digital 19870619 Present publication date DLG This source provided the hydrography for locating the intersection of the stream drainage with geologic formation outcrops. The quadrangles include 1,100,000-scale Rapid City, SD, 1977, Belle Fourche, SD, 1983, Sundance, WY, 1987, and Devils Tower, WY, 1979. This product is the digital version of potential streamflow-loss zones as shown on Plate 2 in USGS WRIR 00-4103, which documents the process used in creating the map in detail. A summary of the process steps is described below. STEP 1: The arcs representing the hydrography of Lawrence County were clipped with the polygons representing the outcrops of the the Minnekahta Limestone, Minnelusa Formation, and Madison Limestone. This left the stream reaches that crossed the outcrop areas. STEP 2: The stream reaches that received stream flow from drainage basins above the Minnekahta Limestone, Minnelusa Formation, and Madison Limestone outcrops were then selected and all others were deleted. 1999 First draft of metadata created by ldputnam using FGDCMETA.AML ver. 1.33 07/15/99 on ARC/INFO data set /home/project/ldp/projects/lawco.vuln/finalcovs/sd_lcsens_lz 20010201 Vector String 40 Point 8 Transverse Mercator 0.999600 -105.000000 500000.000000 0.000000 coordinate pair 3.82960625 3.82960625 Meters North American Datum of 1927 Clarke 1866 6378206.4 294.98 sd_lcsens_lz.aat FID SHAPE FNODE# TNODE# LPOLY# RPOLY# LENGTH SD_LCSENS_LZ# SD_LCSENS_LZ-ID NAME DR-AREA $ID $FROMNODE $TONODE $LEFTPOLYGON $RIGHTPOLYGON SD_LCSENS_LZ.AAT: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 4 12 F 3 21 SD_LCSENS_LZ# 4 5 B - 25 SD_LCSENS_LZ-ID 4 5 B - 29 NAME 30 30 C - 59 DR-AREA 8 8 C - FNODE# - Internal number of from-node TNODE# - Internal number of to-node LPOLY# - Internal number of the left polygon; set to 0 for this data set because there are no polygons RPOLY# - Internal number of the left polygon; set to 0 for this data set because there are no polygons LENGTH- Length of arc in meters SD_LCSENS_LZ# - Internal sequence number (i.e. the record number) of the arc in the ARC file SD_LCSENS_LZ-ID - assigned feature ID NAME - assigned name for the stream flow loss-zone DR-AREA - assigned site numbers that corresponds to the site number of contributing drainage areas upstream from potential streamflow-loss zones none U.S. Geological Survey Ask USGS - Water Webserver Team mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sd_lcsens_lz Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Export Full coverage zipped 1 http://water.usgs.gov/GIS/dsdl/sd_lcsens_lz.e00.gz SDTS Full coverage zipped 1 http://water.usgs.gov/GIS/dsdl/sd_lcsens_lz_sdts.tar.gz Other Full coverage zipped 1 http://water.usgs.gov/GIS/dsdl/sd_lcsens_lz_shape.tar.gz None. This dataset is provided by USGS as a public service. 20041108 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sd_lcsens_lz FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998