surface irrigation in montana. most systems in place for many years

14
SURFACE IRRIGATION IN MONTANA

Upload: kathleen-ginger-phillips

Post on 19-Jan-2018

217 views

Category:

Documents


0 download

DESCRIPTION

SURFACE IRRIGATION TYPES WILD FLOODING CONTOUR DITCH BORDERS FURROWS

TRANSCRIPT

Page 1: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

SURFACE IRRIGATION

IN

MONTANA

Page 2: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

MOST SYSTEMS IN PLACE

FOR MANY YEARS

Page 3: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

SURFACE IRRIGATION TYPES

• WILD FLOODING• CONTOUR DITCH

• BORDERS• FURROWS

Page 4: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

CONTOUR DITCH

PERMANENT CROPS STEEP SLOPES, LITTLE SMOOTHING

SOMETIMES REPLACED WITH GATED PIPE

Page 5: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

BORDER IRRIGATION

• ALMOST ALWAYS GRADED BORDERS

• ALFALFA, GRAINS• MAY BE USED IN

SHORT ROTATIONS WITH FURROW

CROPS

Page 6: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

FURROW IRRIGATION

MOSTLY IN THE YELLOWSTONE RIVER BASIN

Page 7: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

Gated Pipe Systems

Great increase in use since cost share began in late 1980’s.

Page 8: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

PROBLEM

AREAS

Page 9: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

WATER QUALITY

• Late season (>July) water quality/volume declines.• Leaching component must be applied in the spring.• Conversion to center pivots may not be feasible.

Page 10: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

LACK OF WATER MEASUREMENT

Page 11: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

LEADS TO OTHER PROBLEMS

OVER IRRIGATION AND EROSION

Page 12: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

ENCOURAGE USE OF PAM

Page 13: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

EQIP CONVERSION TO SPRINKLERS

LABOR SAVINGS + MANAGEMENT

Page 14: SURFACE IRRIGATION IN MONTANA. MOST SYSTEMS IN PLACE FOR MANY YEARS

FINALLY, THE BOTTOM LINE:

PROFITABLE CONSERVATION