GEOLOGIC ATLAS OF RENVILLE COUNTY, MINNESOTA Hydrogeologic Cross Sections By Randy J. Bradt 2017 COUNTY ATLAS SERIES RENVILLE COUNTY Atlas C-28, Plate 8 of 8 Hydrogeologic Cross Sections E–E ’ through I–I ’ To accompany these atlas components Report, Map Figures 1–27, Plates 6–7 STATE OF MINNESOTA DEPARTMENT OF NATURAL RESOURCES 500 Lafayee Road St. Paul, MN 55155-4025 888-646-6367 or 651-296-6157 mndnr.gov This informaon is available in alternave format on request. The Minnesota DNR prohibits discriminaon in its programs and services based on race, color, creed, religion, naonal origin, sex, public assistance status, age, sexual orientaon, or disability. Persons with disabilies may request reasonable modificaons to access or parcipate in DNR programs and services by contacng the DNR ADA Title II Coordinator at [email protected] or 651-259-5488. Discriminaon inquiries should be sent to Minnesota DNR, 500 Lafayee Road, St. Paul, MN 55155-4049; or Office of Civil Rights, U.S. Department of the Interior, 1849 C Street NW, Washington, DC 20240. © 2017, State of Minnesota, Department of Natural Resources and the Regents of the University of Minnesota Funding for this project was provided by the following: The Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislave Cizen Commission on Minnesota Resources (LCCMR). The Clean Water Fund, which receives 33 percent of the sales tax revenue from the Clean Water, Land and Legacy Amendment, approved by voters in November 2008. This map was compiled and generated in a geographic informaon system. Digital data products are available from the DNR County Geologic Atlas Program at mndnr.gov/groundwatermapping. This map was prepared from publicly available informaon. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map interpretaon is based. However, the DNR does not warrant the accuracy, completeness, or any implied uses of these data. Users may wish to verify crical informaon; sources include both the references in the report and informaon on file in the offices of the Minnesota Geological Survey and the DNR. Every effort has been made to ensure the interpretaon shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal tle, boundaries, or locaons of improvements. Base modified from Minnesota Geological Survey, Renville County Geologic Atlas, Part A, 2013. Universal Transverse Mercator projecon, zone 15N, North American Datum of 1983. North American Vercal Datum of 1988. GIS and cartography by Randy J. Bradt and Holly Johnson. Edited by Ruth MacDonald. Prepared and Published with the Support of the MINNESOTA ENVIRONMENT AND NATURAL RESOURCES TRUST FUND and the CLEAN WATER, LAND AND LEGACY AMENDMENT 1050 1100 1000 950 900 850 800 750 700 650 600 I’ I 1050 1100 1000 950 900 850 800 750 700 650 600 Elevation (feet) 1000 950 1000 975 1025 1025 5.47* 5 11 142 246 246 8000 Franklin Fort Ridgely Creek Purgatory Creek Minnesota River Little Rock Creek State Hwy 19 State Hwy 4 g3 tm u g4 th u bdrk g1 g2 th u 1050 1100 1000 950 900 850 800 750 700 650 600 H’ H 1050 1100 1000 950 900 850 800 750 700 650 600 Elevation (feet) 1025 1000 1000 975 950 1025 10.1 10 152 900 210 th tt UNKN tm tt g4 g3 g2 g2 u u g3 bdrk g1 tm u th g1 US Hwy 71 State Hwy 19 State Hwy 4 Minnesota River Little Rock Creek Fort Ridgely Creek Purgatory Creek Birch Coulee Creek 1050 1100 1000 950 900 850 800 750 700 650 600 550 500 G’ G 1050 1100 1000 950 900 850 800 750 700 650 600 550 500 Elevation (feet) 950 1050 1025 1025 975 1075 1000 17.2* 34.7* 6.5 5.5 24 15.36 290 332 210 4.26 1.98 7000 g4 tt u tt ti g4 g3 g1 g2 tt tm tt u u th th g3 g2 g1 tm Fort Ridgely Creek Birch Coulee Creek Timms Creek Beaver Creek Smith Creek Minnesota River Middle Creek Little Rock Creek US Hwy 71 State Hwy 4 1050 1100 1000 950 900 850 800 750 700 650 F’ F 1050 1100 1000 950 900 850 800 750 700 650 Elevation (feet) 1050 975 1025 1000 1050 1000 1025 1075 9.30* 24.3* 21.2* 10.2* 29 45 48 547 130 330 th tt th u u te g1 tm g1 u ti th g4 g2 UNKN tm g3 g2 g3 tt g1 g4 High Island Creek Timms Creek Birch Coulee Creek Beaver Creek East Fork Beaver Creek Minnesota River Smith Creek Middle Creek US Hwy 71 State Hwy 4 1050 1100 1000 950 900 850 800 750 700 650 600 E’ E 1050 1100 1000 950 900 850 800 750 700 650 600 Elevation (feet) 1075 1025 925 1025 975 1000 1050 900 1050 950 32.5* 20 72 8.1 8.4 110 149 124 tt g4 g2 tt tm g1 th th tm ti tt u g3 te g1 th tt g2 th u g4 g2 g3 th tm US Hwy 71 US Hwy 212 State Hwy 4 Hector East Fork Beaver Creek Timms Creek Sacred Heart Creek Sacred Heart Creek (east branch) Minnesota River Buffalo Creek Beaver Creek ) 44° 45' 94° 45' 94° 30' 44° 30' 95° 00' 95° 15' ) 4 19 71 212 212 71 Buffalo Lake Hector Bird Island Olivia Danube Renville Sacred Heart Fairfax Franklin Morton B’ A A’ B C D D’ C’ G’ F’ E’ I’ H’ E F G H I A B C D E F A’ B’ C’ D’ E’ F’ Symbols Part B line of cross section not shown on this plate Well used to generate cross section A A’ Part B line of cross section shown on this plate F F’ Part A line of cross section A A’ 1 0 1 2 3 4 SCALE 1:400 000 1012 4567 KILOMETERS 3 5 MILES N ss Aquifers and aquitards grouped by stratigraphy Quaternary unconsolidated sediment Quaternary aquitards Grouped by texture ranging from highest to lowest sand content indicating relative hydraulic conductivity. Surficial sand and gravel Buried aquifers and aquitards Geologic unit code Percent sand Bedrock bdrk tt ti, tm th, g1, g2, g3, g4, te hl, l >50% and ≤60% >40% and ≤50% >30% and ≤40% ≤30% Groundwater conditions Symbols and labels Land or bedrock surface General groundwater flow direction Geologic contact Approximate equipotential contour; contour interval 25 feet 1050 Water table Tritium age Darker color in small vertical rectangle (well screen symbol) indicates tritium age of water sampled in well. Lighter color indicates interpreted age of water in aquifer. Mixed: water is a mixture of recent and vintage waters (greater than 1 TU to less than 8 TU). Well not sampled for tritium. Pumping well Vintage: water entered the ground before 1953 (less than or equal to 1 TU). Recent: water entered the ground since about 1953 (8 to 15 tritium units [TU]). CROSS SECTION EXPLANATION Interpreted tritium age is indicated by background color Interpreted tritium age is indicated by pattern color See Report Figure 1 for geologic unit correlation. Chloride concentration. If shown, chloride concentration equals or exceeds 5 parts per million and bromide concentration equals or exceeds 0.07 part per million. (* indicates naturally elevated values) 17.2* If shown, nitrate concentration equals or exceeds 1 part per million. 1.98 If shown, arsenic concentration equals or exceeds 5 parts per billion. 8.1 If shown, manganese concentration equals or exceeds 100 parts per billion. If shown, groundwater residence time in years as estimated by carbon-14 ( 14 C) isotope analysis. 8000 110 Groundwater flowpath is unknown (deep groundwater, recent or mixed tritium age). 1 0 1 2 3 4 5 MILES 1 0 1 2 4 5 6 7 8 3 9 KILOMETERS SCALE 1:100 000 VERTICAL EXAGGERATION X 50 hl* l* th* si ti* sm tm* st tt* g1* s2 g2* s3 g3* s4 g4* te* su Undifferentiated sediment (u) sz Unknown (UNKN) Groundwater discharges to a surface-water body. *aquitard LOCATION DIAGRAM