Surface Irrigation Designs with Variable Slope

Last Updated: 24 February 2014          For: OptiSurface Designer V1.4 and higher

Question:

Can we design with variable slope and still make good surface irrigation?

Answer:
For furrow irrigation, our basic policy is that we try to keep the slopes as uniform as possible.  However, the slopes can vary significantly and not significantly affect irrigation uniformity and efficiency. 

Our rule of thumb is that the maximum slope should be no more than double the minimum slope to promote uniform irrigation. This cannot be achieved always and the farmer is often happy to get any water on the field to improve production.



Tips and Tricks

  1. Erosion Control Banks & Waterway
  2. Drainage Design Solutions of Different Topographies
  3. Runoff vs Slope
  4. Trimble Field Level II Do Not Show the .gps File
  5. Minimum Recommended Smoothing Distance For Export To Trimble Field Level 2
  6. GPS Base Station Setup For Best Vertical Accuracy
  7. How to Survey with Trimble FMX
  8. How Easy is OptiSurface to Use for the Average Farmer?
  9. Balancing Earthworks in the Field
  10. Landform Design Slopes and Smoothing
  11. Export Proposed Topography to AutoCAD
  12. Surface Irrigation Designs with Variable Slope
  13. OptiSurface Designer Import and Export Format
  14. Importing Multiple Survey Files to OSD
  15. Can Drone Or LIDAR Surveys be used with OptiSurface?
  16. Calculation Grid Spacing and Export Grid Spacing
  17. How to Survey a Field for Landforming Design
  18. Loading .gps File in FmX
  19. Designing a Field in Sections
  20. Using an Old OSD File versus a New Survey
  21. No Master Benchmark on Imported Survey File
  22. Displaying Secondary Benchmarks
  23. Import Error for xyz File Due to Encoding Format
  24. OptiSurface4D: Bounded By Ridges
  25. Can OptiSurface handle curved rows in Drainage Analysis & Runoff Analysis?
  26. Reverse Grades to Main Slope
  27. Measuring Culvert Invert Level
  28. Surveying a 1000-Ha Field
  29. GPS Coordinate System Check
  30. Does A Normal UTM Zone Coordinate Need To Be Trimmed To x Digits?
  31. Can You Import Data Directly From GPS System?
  32. Converting Latitude/Longitude to Easting/Northing
  33. Surveying With Any GPS Equipment and Exporting to a gps file for the Trimble FMX
  34. DGPS Post Treating System with 5cm Precision For Landforming
  35. Exporting to Trimble FMX Field Level
  36. Can I Survey with a GPS System on an ATV?
  37. Standard NMEA GPGGA txt File to Import into OptiSurface Designer
  38. Importing .csv File from APEX to OptiSurface Designer
  39. 900 Acres: Cut that large survey down.
  40. Export Options for Data Layers
  41. Import Two or More Survey Files to Reach Minimum Area
  42. Different Row Slope Directions In One Field
  43. Does OptiSurface allow for multiple grade breaks per design, taildrains roads, pads etc?
  44. Can I View DTM/Topography In Plan View Or 3D Type View When Doing A Design?
  45. Adjust the Bands in the Legend
  46. Design for a 1000-Ha Field
  47. Would It Be Possible That The Numbers In The Boundary Zone Appear In The New Subzone Created?
  48. Grade Of Best Fit And Splitting The Field Into Boundaries
  49. Acceptable Minimum Slopes
  50. Incorrect Area in OptiSurface
  51. Valley Subzone Not Behaving as Expected
  52. Difference Between Breaklines And Subzones
  53. Alignment of Furrow/Bed Direction with OptiSurface Design Mainslope Direction
  54. Subzones Settings Over Ride Boundary Zone Settings
  55. Printing the Maps
  56. Print Size

Feedback and Knowledge Base