Center pivot vs. drip vs. surface irrigation in Colorado
Choosing or upgrading an irrigation system is one of the largest decisions on an irrigated Colorado farm. This guide compares the main system types using Colorado State University (CSU) Extension figures, and flags the water-law and cost-share issues that are specific to Colorado.
Why efficiency matters in Colorado
Water Education Colorado, citing the Statewide Water Supply Initiative (SWSI) 2010, reports that farmers and ranchers use 89% of the total water consumed in Colorado, about 4.7 million acre-feet a year (Water Education Colorado). With drier years expected, how efficiently that water reaches the root zone affects yields, energy and labor costs, and water quality.
CSU Extension notes that over-irrigation leaches nitrate to groundwater, causes surface runoff losses, and reduces the efficiency of nitrogen fertilizer. Irrigation water management is therefore "essential for profitable yields and protecting water quality" (CSU Extension fact sheet 0.514).
Application efficiency by system type
CSU Extension fact sheet 0.514 lists these typical application efficiencies, meaning the share of applied water that's stored in the root zone for crop use (CSU Extension 0.514):
| System | Typical application efficiency |
|---|---|
| Micro sprinklers and drip | 85–95% |
| Low-pressure center pivots | 80–90% |
| High-pressure center pivots | 75–85% |
| Side roll / hand move sprinklers | 60–70% |
| Furrow with surge | 70–90% |
| Furrow with cutback | 60–80% |
| Furrow, no cutback | 40–60% |
| Border irrigation | 40–60% |
| Flood irrigation | 20–50% |
Two takeaways. First, the gap between well-run and poorly run systems of the same type can be large. Surge or cutback furrow irrigation can rival a high-pressure pivot. Second, pressure matters for pivots: CSU's low-pressure range sits above the high-pressure range.
System by system
Drip and micro-irrigation
Drip has the highest typical efficiency in CSU's table, at 85–95%. It's common in orchards, vineyards, vegetables, and other high-value crops, and in subsurface drip on some row-crop fields. NRCS supports it as conservation practice 441, Microirrigation (NRCS conservation practice standards). Typical trade-offs to discuss with a designer include filtration and maintenance, rodent and emitter-clogging risk, and up-front cost per acre.
Center pivots
Center pivots dominate many irrigated fields on the Eastern Plains and in the San Luis Valley because they're automated and labor-efficient. CSU puts low-pressure pivots at 80–90% and high-pressure at 75–85% (CSU Extension 0.514). Pivots can be upgraded with lower-pressure packages, end-gun control, telemetry, and variable rate irrigation (VRI). See our soil moisture and VRI guide. NRCS covers sprinkler systems under conservation practice 442 (NRCS).
CSU also advises operating sprinklers to apply water at rates that match the soil's intake rate, which is especially relevant at the outer spans of a pivot where application rates are highest (CSU 0.514).
Surface (furrow, border, flood)
Gravity systems remain widespread where ditch water is delivered and fields are leveled. Their efficiency varies more than any other type, from 20% for poorly managed flood up to 90% for surge furrow. CSU recommends cutback practices with surface irrigation to reduce deep percolation and runoff. It also advises using flumes and water meters to measure what you apply; with siphon tubes or gated pipe, multiply the stream flow rate by irrigation duration (CSU 0.514).
Upgrades short of a new system
Replacing a whole system isn't the only option. NRCS publishes separate conservation practice standards for many smaller irrigation improvements, including Irrigation Pipeline (430), Irrigation Ditch Lining (428), Irrigation and Drainage Tailwater Recovery (447), Structure for Water Control (587), Pumping Plant (533), and Irrigation Water Management (449) (NRCS). NRCS notes that you must use your state's adopted version of each standard, not the national one, when planning and designing a practice. For surface systems, CSU's table shows that adding cutback or surge management alone can move furrow efficiency from 40–60% into the 60–90% range (CSU 0.514). For pivots, moving to a low-pressure package shifts the typical range upward, and adding scheduling and monitoring improves any system.
The Colorado water-rights wrinkle
In Colorado, a more efficient system doesn't create water you can sell. Water Education Colorado explains that a farmer "does not have the ability to sell or lease any portion of the water that goes unused due to an efficiency improvement because the limit of the water right is attached to the historical consumptive use of the crop itself" (Water Education Colorado). Higher efficiency can still mean less pumping and lower energy costs, more even application, less leaching of nitrogen, and the ability to stretch a short supply over more of the season.
The same source notes that when irrigators divert less, river ecosystems and downstream users can benefit. Because return flows from less-efficient irrigation can be part of what downstream rights rely on, ask your water commissioner or a water attorney before changing how or where you use water.
Paying for an upgrade: NRCS EQIP
The USDA Natural Resources Conservation Service's Environmental Quality Incentives Program (EQIP) offers cost-share for irrigation systems, water control structures, and irrigation water management, all of which Colorado lists as state priorities (NRCS Colorado EQIP). Colorado producers should apply by Nov. 20, 2026 to be considered for fiscal year 2027 funding (NRCS application cutoff dates). Don't start work before your contract is approved, or the practice becomes ineligible. Read our full EQIP irrigation guide.
A simple decision checklist
- Know your current efficiency. CSU recommends determining your system's application efficiency and consulting a qualified irrigation technician to assess performance (CSU 0.514).
- Measure what you apply. Use flumes or meters.
- Know your soil. Probe during and after irrigation to see how deep water penetrates, and know your soil's water-holding capacity.
- Match the crop. High-value crops can justify drip; field crops on large, regular fields often favor pivots.
- Check water law. Confirm your change doesn't conflict with your decree or augmentation plan.
- Price the full system, including power, pumps, filtration, maintenance, and labor, then check what EQIP will cover.
Sources
- CSU Extension, Fact Sheet 0.514, Nitrogen and Irrigation Management: https://extension.colostate.edu/docs/pubs/crops/00514.pdf
- Water Education Colorado, Agricultural Conservation & Efficiency: https://watereducationcolorado.org/water-101/water-use-conservation-efficiency/agricultural-conservation-efficiency/
- USDA NRCS, EQIP – Colorado: https://www.nrcs.usda.gov/programs-initiatives/environmental-quality-incentives-program/colorado/environmental-quality
- USDA NRCS, Application Cutoff Dates: https://www.nrcs.usda.gov/application-cutoff-dates
- USDA NRCS, Conservation Practice Standards: https://www.nrcs.usda.gov/resources/guides-and-instructions/conservation-practice-standards