1. Crop Yield in North Dakota as a function of Precipitation Tyler McEwen GIS in Water Resources Term Project Presentation 12/7/2006

2. Presentation Overview Introduction/Objectives Introduction/Objectives Data Collection Data Collection Data Manipulation/Computation Data Manipulation/Computation Results Results Conclusions Conclusions

3. North Dakota: Facts Largest City: Fargo Population 90,672 Total Population 636,677 Total Area 68,676 square miles 21.0 % Total Jobs From Agriculture/Related Work

4. Original Objectives Obtain soil survey for entire state!! Obtain soil survey for entire state!! Join crops to soil type and Land Use/Land Cover (LULC) data Join crops to soil type and Land Use/Land Cover (LULC) data Precipitation calculations and manipulations Precipitation calculations and manipulations Interpolate precipitation data Interpolate precipitation data Create crop yield predictive model Create crop yield predictive model

5. Current Objectives Join crop yield data to county shapefile Join crop yield data to county shapefile Perform precipitation calculations and manipulation Perform precipitation calculations and manipulation Interpolate precipitation for 10 years of data Interpolate precipitation for 10 years of data Create animations of crop yield versus precipitation Create animations of crop yield versus precipitation Derive correlations Derive correlations

6. Data Sources National Agricultural Statistics Service (NASS) http://www.nass.usda.gov/ http://www.nass.usda.gov/ National Climate Data Center – Climate Data Online http://cdo.ncdc.noaa.gov/CDO\ http://cdo.ncdc.noaa.gov/CDO\ National Weather Service OST/SEC GIS Map Group http://www.nws.noaa.gov/geodata/catalog/national/html/us_state.htm http://www.nws.noaa.gov/geodata/catalog/national/html/us_state.htm InfoPlease.com http://www.infoplease.com/ipa/A0108256.html

7. Precipitation Data Approximated growing season dates Approximated growing season dates Growing Season (May – September) Growing Season (May – September) Spring & durum wheat, corn, barley, sugarbeets, flaxseed, soybeans, canola, sunflower, hay and potatoes Spring & durum wheat, corn, barley, sugarbeets, flaxseed, soybeans, canola, sunflower, hay and potatoes Extrapolated precipitation data for growing season Extrapolated precipitation data for growing season

8. Data Collection

10. Data Manipulation/Calculation Calculated total rainfall during crop growing season Calculated total rainfall during crop growing season Joined rainfall to precipitation stations Joined rainfall to precipitation stations Interpolated rainfall using Spline method Interpolated rainfall using Spline method

11. Precipitation Interpolation

12. Results To the animations! To the animations!

13. Conclusions No correlation between precipitation and crop yield…yet No correlation between precipitation and crop yield…yet East vs. west correlation East vs. west correlation

14. Goals Produce more animations Produce more animations Find correlation Find correlation

15. Special Thanks Grandfather Grandfather Dr. Maidment Dr. Maidment Tyler Jansen Tyler Jansen Fellow students Fellow students

16. Questions???