Christopher A. Sanocki is a supervisory geographer and water-use specialist for the USGS Upper Midwest Water Science Center. Chris has worked on many and varied projects including, watershed characterization, flood frequency, groundwater and water use. Chris has presented locally and nationally on “GIS Data and Application Management”, “Web based Watershed and Flood Frequency Applications” (Stream
Publications:
Hopkins, A. L., Dunn, N. A., Dooley, K. M., & Sanocki, C. A. (2021). Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S. [Data set]. U.S. Geological Survey. https://doi.org/10.5066/P9WUCQDU
Sanocki, C.A., Williams-Sether, T., Steeves, P.A., and Christensen, V.G., 2019, Techniques for estimating the magnitude and frequency of peak flows on small streams in the binational U.S. and Canadian Lake of the Woods–Rainy River Basin upstream from Kenora, Ontario, Canada, based on data through water year 2013: U.S. Geological Survey Scientific Investigations Report 2019–5012, 17 p., https://doi.org/10.3133/sir20195012
Smith, E.A., Sanocki, C.A., Lorenz, D.L., and Jacobsen, K.E., 2017, Streamflow distribution maps for the Cannon River drainage basin, southeast Minnesota, and the St. Louis River drainage basin, northeast Minnesota: U.S. Geological Survey Scientific Investigations Map 3390, pamphlet 16 p., 2 sheets, https://doi.org/10.3133/sim3390
Smith, E.A., Lorenz, D.L., Kessler, E.W., Berg, A.M., and Sanocki, C.A., 2017, Groundwater discharge to the Mississippi River and groundwater balances for the Interstate 94 Corridor surficial aquifer, Clearwater to Elk River, Minnesota, 2012–14: U.S. Geological Survey Scientific Investigations Report 2017–5114, 54 p., https://doi.org/10.3133/sir20175114
Ziegeweid, Jeffrey R.; Lorenz, David L.; Sanocki, Chris A.; Czuba, Christiana R., 2015. Methods for Estimating Flow-Duration Curve and Low-Flow Frequency Statistics for Ungaged Locations on Small Streams in Minnesota. U.S. Geological Survey Scientific Investigations Report 2015-5170, online-only
Kessler, Erich W.; Lorenz, David L.; Sanocki, Christopher A., 2013. Methods and results of peak-flow frequency analyses for streamgages in and bordering Minnesota, through water year 2011. U.S. Geological Survey Scientific Investigations Report 2013-5110, Report: iv, 46 p.; Downloads Directory
Ellison, Christopher A.; Sanocki, Chris A.; Lorenz, David L.; Mitton, Gregory B.; Kruse, Gregory A. 2011 Floods of September 2010 in Southern Minnesota, USGS Scientific Investigations Report: 2011-5045
Sanocki, Christopher A.; Langer, Susan K.; Menard, Jason C. 2009 U.S. Geological Survey Scientific Investigations Report 2009-5226 Potentiometric Surfaces and Changes in Groundwater Levels in Selected Bedrock Aquifers in the Twin Cities Metropolitan Area, March-August 2008 and 1988-2008
Lorenz, D. L.; Sano
Abstracts and Presentations
Sanocki, Christopher A., 2019 Great Lakes Coastal Wetland Restoration Assessment, Minnesota GIS/LIS Conference October 2-4, 2019, St Cloud, Minnesota
Sanocki, Christopher A., 2018 Bulletin 17B to 17C Updates, Minnesota Association of Floodplain Managers Conference November 13-16, Mankato, Minnesota
Sanocki, Christopher A., 2018 USGS StreamStats and High-Resolution DEMs, Minnesota Association of Floodplain Managers Conference November 13-16, Mankato, Minnesota
Sanocki, Christopher A., 2018 USGS Regional Flood Trends Report, Minnesota Association of Floodplain Managers Conference November 13-16, Mankato, Minnesota
Sanocki, Christopher A., Katrin Jacobsen, 2017 U.S. Geological Survey Site-specific Water-use Data System (SWUDS) Tracking and Reporting Water-use for the Nation, Minnesota GIS/LIS Conference October 4-6, 2017, Bemidji, Minnesota
Brandi J. Kastner, Victoria G. Christensen, Tanja N. Williamson, Christopher A. Sanocki 2016, Migratory Bird Habitat in Relation to Tile Drainage and Poorly Drained Hydrologic Soil Groups, 10th International Drainage Symposium Conference, 6-9 September 2016, Minneapolis, Minnesota
Sanocki, Christopher A. 2015 WaterSMART and Water Use Guide USGS Science Goals and Priorities, Minnesota GIS/LIS Conference October 7-9, 2015, Duluth, Minnesota
Sanocki, Christopher A. 2014 Bi-National Rainy River StreamStats Meeting, International joint Commission, Environment Canada, USGS July 7, 2014
Sanocki, Christopher A. 2012 Using NHDPlus to generate watersheds for 10,000 fish mercury sampling sites across the United States, Minnesota GIS/LIS Conference October 3-5, 2012, St Cloud, Minnesota
Sanocki, Christopher A. 2010 Harmonized Minnesota DNR Catchments, Federal Watershed Boundary Data, and Canadian Watersheds to Provide Tools for Binational Water Resource Analysis and Planning Minnesota GIS/LIS conference, Oct. 13-15, 2010 Duluth, Minnesota
Sanocki, Christopher A. 2009. Changes in Groundwater Level and Potentiometric Surfaces in Selected Bedrock Aquifers in the Twin Cities Metropolitan Area, 2008 Minnesota Water Resources Conference October 26-27, 2009 Saint Paul, Minnesota
Sanocki, Christoher A. 2008 USGS StreamStats program status in Minnesota”.Minnesota Governers Council Hydrography Subcommittee February 21, 2008
Sanocki, Christopher A. 2007 Panel: National Hydrography Dataset (NHD) Stewardship and Hydrography Applications, Minnesota GIS/LIS Consortium Conference, October 10-12, 2007, Mayo Civic Center, Rochester, Minnesota.
Sanocki, Christopher A. 2006 Displaying Surface-Water Data and Spatial Information for USGS Gaging and Water-Quality Stations in Minnesota, U.S. Geological Survey Sixth Biennial Geographic Information Science Workshop, Denver, Colorado, April 24-28, 2006
Kocian M., C. Sanocki, B. Vondracek. 2006 Comparing Geographic Information System Stream Slope Methods to Field Measurements in Minnesota. U.S. Geological Survey Sixth Biennial Geographic Information Science Workshop (USGS GIS 2006), 24-28 April, Denver, Colorado
Kocian M., B. Vondracek. and C. Sanocki. 2006 Using a GIS to Estimate Stream Physical Characteristics. 26th Annual ESRI International User Conference. San Diego, California, 7-11 August 2006 . (POSTER)
Kocian, M., B. Vondracek, and C. Sanocki. 2006 Using a GIS to Estimate Stream Geomorphic Characteristics. Minnesota Natural Resources Conference, Brainerd, Minnesota 1-2 March (POSTER)
Kocian, M., C.Sanocki, B.Vondracek, and B.N.Wilson. 2005. Evaluation variability in stream slope estimates using GIS. 15th Annual Meeting of the Minnesota GIS/LIS Consortium Conference and Workshops, St. Cloud, MN 3-5 October.
Sanocki, Chris A., 2004 Minnesota Stream and Lake Watershed Characteristics Available on the World Wide Web, 14th Annual Meeting of the Minnesota GIS/LIS Consortium Conference and Workshops, St. Cloud, MN 4-6 October 2004.
Sanocki, Chris A., Rane, Sanjay 2004 StreamStats, ArcHydro, and a Nationally Consistent Stream-Slope Application, 14th Annual Meeting of the Minnesota GIS/LIS Consortium Conference and Workshops, St. Cloud, MN 4-6 October 2004.
Sanocki C.A, Rane S.A., “Comparison of stream-slope estimation automated vs semi-automated techniques” ESRI International User Conference 2003, San Diego, CA
Sanocki C. A., Federal GIS users conference “Minnesota Model for GIS Data and Application Management” Spring 2001 Denver, CO
Sanocki C.A., Minnesota’s process to incorporate watershed information into National standards and EROS data centers Seamless Data Access, Base Layer Development and future cooperation with USGS Minnesota on Automated HUC Level 4 base map production. Second annual NED-H* Collaborators’ Meeting, June 26th-28th, 2001. USGS EROS Data Center Sioux Falls, South Dakota.
Sanocki, C.A., and Fischer, Brian, 2000, Web based watershed information system [abs.]: Minnesota Water 2000, April 25-26, 2000, Minneapolis, Minn., p. 16.
Sanocki C.A. Minnesota Watershed Information Project North-Central States Regional HUC Meeting August 2000
Sanocki, C.A., and Fischer, Brian, “Minnesota Watershed Information Project and Automated Basin Characteristics and Flood Frequency Estimation” Minnesota GIS/LIS conference 2000
Sanocki, C.A. 1996, Using a geographic information system to create a gaging station data base for Minnesota and parts of North Dakota, South Dakota, Iowa, and Wisconsin [abs.], in U.S. Geological Survey National Computer Technology Meeting -- Programs and abstracts, Rancho Mirage, California, May 19-23, 1996.
Science and Products
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Upper Peninsula, U.S.: Degree Flowlines
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Upper Peninsula, U.S.
Upper Peninsula Coastal Wetland Restoration Assessment: Dikes
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Green Bay, U.S.: Composite Model Layers
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Green Bay, U.S.: Degree Flowlines
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Green Bay, U.S.: Dikes
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S.
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S.: Degree Flowlines
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S.: Dikes
Soil-Water Balance model datasets used to estimate groundwater recharge to the I-94 growth corridor surficial aquifer, Minnesota, 2010-2014
Streamflow distribution maps for the Cannon River drainage basin, southeast Minnesota, and the St. Louis River drainage basin, northeast Minnesota
Techniques for estimating the magnitude and frequency of peak flows on small streams in Minnesota, excluding the Rainy River Basin, based on data through water year 2019
Estimating flood magnitude and frequency for unregulated streams in Wisconsin
Techniques for estimating the magnitude and frequency of peak flows on small streams in the binational U.S. and Canadian Lake of the Woods–Rainy River Basin upstream from Kenora, Ontario, Canada, based on data through water year 2013
Groundwater discharge to the Mississippi River and groundwater balances for the Interstate 94 Corridor surficial aquifer, Clearwater to Elk River, Minnesota, 2012–14
Migratory bird habitat in relation to tile drainage and poorly drained hydrologic soil groups
Methods for estimating flow-duration curve and low-flow frequency statistics for ungaged locations on small streams in Minnesota
Methods and results of peak-flow frequency analyses for streamgages in and bordering Minnesota, through water year 2011
Floods of September 2010 in Southern Minnesota
Techniques for Estimating the Magnitude and Frequency of Peak Flows on Small Streams in Minnesota Based on Data through Water Year 2005
Water-Quality and Biological Characteristics and Responses to Agricultural Land Retirement in Three Streams of the Minnesota River Basin, Water Years 2006-08
Riparian Land Use/Land Cover Data for Three Study Units in Group II of the Nutrient Enrichment Effects Topical Study of the National Water-Quality Assessment Program
Potentiometric Surfaces and Changes in Groundwater Levels in Selected Bedrock Aquifers in the Twin Cities Metropolitan Area, March-August 2008 and 1988-2008
Science and Products
- Data
Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Upper Peninsula, U.S.: Degree Flowlines
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. These data represent the flowline network in the Upper Peninsula Restoration Assessment (UPRA). It is attributed with the number of disconnections (e.g., road crossings) between the reach and Lake Ontario. The more road crossings on a flowline the more disconnected thatGreat Lakes Coastal Wetland Restoration Assessment (GLCWRA) Upper Peninsula, U.S.
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative and were used to assess the restorability of areas that historically supported coastal wetlands along the southern coastline of Michigan’s Upper Peninsula. The GLCWRA initiative uses principles of geodesign to identify coastal wetland areas that have the greatest potentiUpper Peninsula Coastal Wetland Restoration Assessment: Dikes
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. These data represent the location of dikes within the Upper Peninsula Restoration Assessment (UPRA) study area. An ArcGIS model (Python script) identified dikes as having a difference in elevation above a certain threshold. If the elevation difference was below a certaiGreat Lakes Coastal Wetland Restoration Assessment (GLCWRA) Green Bay, U.S.: Composite Model Layers
This dataset contains all the layers associated with U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative for the Green Bay Restoration Assessment (GBRA) which aims to identify and rank coastal areas with the greatest potential for wetland habitat restoration. Each layer has a unique contribution to the identification of restorable wetlands. The 7 paGreat Lakes Coastal Wetland Restoration Assessment (GLCWRA) Green Bay, U.S.: Degree Flowlines
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. These data represent the flowline network in the Green Bay Restoration Assessment (GBRA). It is attributed with the number of disconnections (e.g., road crossings) between the reach and Lake Ontario. The more road crossings on a flowline the more disconnected that areaGreat Lakes Coastal Wetland Restoration Assessment (GLCWRA) Green Bay, U.S.: Dikes
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. These data represent the location of dikes within the Green Bay Restoration Assessment (GBRA) study area. An ArcGIS model (Python script) identified dikes as having a difference in elevation above a certain threshold. If the elevation difference was below a certain threGreat Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S.
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. The GLCWRA initiative uses principles of geodesign to identify coastal wetland areas that have the greatest potential for habitat restoration. The data model uses the following seven primary parameters to identify and rank wetland restoration areas. The parameters are:Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S.: Degree Flowlines
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. The degree flowlines dataset was created to indicate how many culverts each flowline passes through within the Lake Ontario Restoration Assessment (LORA) study area. The more road crossings on a flowline the more disconnected that area is from the lake and the less suitGreat Lakes Coastal Wetland Restoration Assessment (GLCWRA) Lake Ontario, U.S.: Dikes
This dataset is part of the U.S. Geological Survey (USGS) Great Lakes Coastal Wetland Restoration Assessment (GLCWRA) initiative. This data represents the location of dikes within the Lake Ontario Restoration Assessment (LORA) study area. The GLCWRA initiative identifies coastal wetland areas that have the greatest habitat restoration potential. The data model uses seven parameters to identify andSoil-Water Balance model datasets used to estimate groundwater recharge to the I-94 growth corridor surficial aquifer, Minnesota, 2010-2014
A soil-water balance model (SWB) was developed to estimate potential recharge to the Interstate 94 Corridor surficial aquifer, located in central Minnesota, for the period 2010 through 2014. The model was not calibrated; however, various water budget components from the model output compared reasonably well with other estimates. Furthermore, the model was based upon the statewide Minnesota SWB pot - Maps
Streamflow distribution maps for the Cannon River drainage basin, southeast Minnesota, and the St. Louis River drainage basin, northeast Minnesota
Streamflow distribution maps for the Cannon River and St. Louis River drainage basins were developed by the U.S. Geological Survey, in cooperation with the Legislative-Citizen Commission on Minnesota Resources, to illustrate relative and cumulative streamflow distributions. The Cannon River was selected to provide baseline data to assess the effects of potential surficial sand mining, and the St. - Publications
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Techniques for estimating the magnitude and frequency of peak flows on small streams in Minnesota, excluding the Rainy River Basin, based on data through water year 2019
Annual peak-flow data collected at U.S. Geological Survey streamgages in Minnesota and adjacent areas of neighboring states of Iowa and South Dakota were analyzed to develop and update regional regression equations that can be used to estimate the magnitude and frequency of peak streamflow for ungaged streams in Minnesota, excluding the Lake of the Woods-Rainy River Basin upstream from Kenora, OntAuthorsChristopher A. Sanocki, Sara B. LevinEstimating flood magnitude and frequency for unregulated streams in Wisconsin
Flood frequency characteristics and estimated flood discharges for the 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities were computed at 299 streamgaged locations in Wisconsin. The State was divided into four flood frequency regions using a cluster analysis to produce regions which are homogeneous with respect to physical basin characteristics. Regression equationsAuthorsSara B. Levin, Christopher A. SanockiTechniques for estimating the magnitude and frequency of peak flows on small streams in the binational U.S. and Canadian Lake of the Woods–Rainy River Basin upstream from Kenora, Ontario, Canada, based on data through water year 2013
A binational study was initiated to update statistical equations that are used to estimate the magnitude and frequency of peak flows on streams in Manitoba and Ontario, Canada, and Minnesota that are contained within the binational Lake of the Woods–Rainy River Basin upstream from Kenora, Ontario, Canada. Hydraulic engineers use peak streamflow data to inform designs of bridges, culverts, and damsAuthorsChristopher A. Sanocki, Tara Williams-Sether, Peter A. Steeves, Victoria G. ChristensenGroundwater discharge to the Mississippi River and groundwater balances for the Interstate 94 Corridor surficial aquifer, Clearwater to Elk River, Minnesota, 2012–14
The Interstate 94 Corridor has been identified as 1 of 16 Minnesota groundwater areas of concern because of its limited available groundwater resources. The U.S. Geological Survey, in cooperation with the Minnesota Department of Natural Resources, completed six seasonal and annual groundwater balances for parts of the Interstate 94 Corridor surficial aquifer to better understand its long-term (nexAuthorsErik A. Smith, David L. Lorenz, Erich W. Kessler, Andrew M. Berg, Christopher A. SanockiMigratory bird habitat in relation to tile drainage and poorly drained hydrologic soil groups
The Prairie Pothole Region (PPR) is home to more than 50% of the migratory waterfowl in North America. Although the PPR provides an abundance of temporary and permanent wetlands for nesting and feeding, increases in commodity prices and agricultural drainage practices have led to a trend of wetland drainage. The Northern Shoveler is a migratory dabbling duck species that uses wetland habitats andAuthorsBrandi Kastner, Victoria G. Christensen, Tanja N. Williamson, Christopher A. SanockiMethods for estimating flow-duration curve and low-flow frequency statistics for ungaged locations on small streams in Minnesota
Knowledge of the magnitude and frequency of low flows in streams, which are flows in a stream during prolonged dry weather, is fundamental for water-supply planning and design; waste-load allocation; reservoir storage design; and maintenance of water quality and quantity for irrigation, recreation, and wildlife conservation. This report presents the results of a statewide study for which regionalAuthorsJeffrey R. Ziegeweid, David L. Lorenz, Christopher A. Sanocki, Christiana R. CzubaMethods and results of peak-flow frequency analyses for streamgages in and bordering Minnesota, through water year 2011
Peak-flow frequency analyses were completed for 409 streamgages in and bordering Minnesota having at least 10 systematic peak flows through water year 2011. Selected annual exceedance probabilities were determined by fitting a log-Pearson type III probability distribution to the recorded annual peak flows. A detailed explanation of the methods that were used to determine the annual exceedance probAuthorsErich W. Kessler, David L. Lorenz, Christopher A. SanockiFloods of September 2010 in Southern Minnesota
During September 22-24, 2010, heavy rainfall ranging from 3 inches to more than 10 inches caused severe flooding across southern Minnesota. The floods were exacerbated by wet antecedent conditions, where summer rainfall totals were as high as 20 inches, exceeding the historical average by more than 4 inches. Widespread flooding that occurred as a result of the heavy rainfall caused evacuations ofAuthorsChristopher A. Ellison, Christopher A. Sanocki, David L. Lorenz, Gregory B. Mitton, Gregory A. KruseTechniques for Estimating the Magnitude and Frequency of Peak Flows on Small Streams in Minnesota Based on Data through Water Year 2005
Knowledge of the peak flow of floods of a given recurrence interval is essential for regulation and planning of water resources and for design of bridges, culverts, and dams along Minnesota's rivers and streams. Statistical techniques are needed to estimate peak flow at ungaged sites because long-term streamflow records are available at relatively few places. Because of the need to have up-to-dateAuthorsDavid L. Lorenz, Christopher A. Sanocki, Matthew J. KocianWater-Quality and Biological Characteristics and Responses to Agricultural Land Retirement in Three Streams of the Minnesota River Basin, Water Years 2006-08
Water-quality and biological characteristics in three streams in the Minnesota River Basin were assessed using data collected during water years 2006-08. The responses of nutrient concentrations, suspended-sediment concentrations, and biological characteristics to agricultural land retirement also were assessed. In general, total nitrogen, suspended-sediment, and chlorophyll-a concentrations, andAuthorsVictoria G. Christensen, Kathy Lee, Christopher A. Sanocki, Eric H. Mohring, Richard L. KieslingRiparian Land Use/Land Cover Data for Three Study Units in Group II of the Nutrient Enrichment Effects Topical Study of the National Water-Quality Assessment Program
This data set was developed as part of the National Water-Quality Assessment (NAWQA) Program, Nutrient Enrichment Effects Topical (NEET) study. This report is concerned with three of the eight NEET study units distributed across the United States: Ozark Plateaus, Upper Mississippi River Basin, and Upper Snake River Basin, collectively known as Group II of the NEET study. Ninety stream reaches wereAuthorsMichaela R. Johnson, Jimmy M. Clark, Ross G. Dickinson, Christopher A. Sanocki, Andrew W. TranmerPotentiometric Surfaces and Changes in Groundwater Levels in Selected Bedrock Aquifers in the Twin Cities Metropolitan Area, March-August 2008 and 1988-2008
This report depicts potentiometric surfaces and groundwater- level changes in three aquifers that underlie the seven-county Twin Cities Metropolitan Area. Approximately 350 groundwater levels were measured in wells from the three aquifers-the Prairie du Chien-Jordan, the Franconia-Ironton-Galesville, and the Mount Simon-Hinckley aquifers-in March and August of 2008. The report presents maps, assocAuthorsChristopher A. Sanocki, Susan K. Langer, Jason C. Menard