Tips For Managing Irrigation During Wyoming Drought Conditions

Wyoming faces a unique set of challenges during drought: high winds, low humidity, large daily temperature swings, and soils that range from sand to heavy clay. Effective irrigation management during drought is about stretching a limited resource while protecting crop yields, soil health, and long-term water rights. This article provides practical, on-the-farm strategies, technical tools, and operational priorities you can apply now to reduce water use and maintain production through dry years.

Understand the local drought context and your water budget

Drought severity, duration, and the timing of shortfalls matter. Early-season water shortages affect establishment and perennial health differently than late-season shortfalls. Before making major changes, develop a clear water budget for the season: how much water you expect, how much your operation normally uses, and where the biggest losses occur.

Map all water sources and volumes. Include surface diversions, wells, ponds, and stored reservoirs. Estimate volumes in acre-feet or gallons per source.
Determine conveyance losses. Open ditches can lose 5-30 percent to seepage and evaporation depending on soil and distance.
Calculate crop water requirements. Use crop coefficients (Kc) and local reference evapotranspiration (ETo) to estimate seasonal needs by crop. If accurate ETo is unavailable, use local weather station data or regional averages.

A simple seasonal water budget template: starting supply minus estimated conveyance and irrigation demand equals reserve or shortfall. Update it every 2 to 4 weeks during the season as actual deliveries and weather data come in.

Prioritize irrigation targets: a triage approach

When water is limited, not all fields can be treated equally. Apply a triage to maximize value and minimize long-term damage.

Rank fields by economic and biological priorities. Prioritize high-value crops, perennial stands, newly seeded fields, and livestock forage that will be needed for the winter.
Identify areas that can tolerate deficit irrigation. Some annual crops can withstand controlled stress during low-sensitivity growth stages without large yield losses.
Delay or fallow low-return ground. Convert marginal or highly water-inefficient acreage to fallow for the season and concentrate water on priority fields.

Document your priorities and communicate them to irrigation crews and water managers so deliveries match the plan during tight weeks.

Use smart scheduling: soil, weather, and plant data

Irrigation schedule decisions should be based on three data streams: soil moisture, weather-driven demand, and plant stage. Combining these reduces unnecessary applications and helps maintain yield with less water.

Soil moisture sensors. Install at representative depths for your rooting zone (e.g., 0-6 inches, 6-18 inches, 18-36 inches for deep-rooted perennials). Use volumetric sensors or tensiometers to determine when to irrigate. Target refill when available water is depleted to a crop-specific allowable depletion (commonly 30-50 percent of plant available water for many crops).
Weather and ET data. Reference evapotranspiration (ETo) multiplied by crop coefficient (Kc) gives daily crop water use. In Wyoming, strong winds and low humidity can increase ET quickly; monitor short-term spikes.
Plant observations. Look for physiological cues: leaf curling, rapid canopy temperature rise, slow growth. Combine visual checks with sensor data before withholding water.

Keep records of sensor readings, irrigation events, and weather. Over several seasons this creates a site-specific model you can rely on in future droughts.

Improve conveyance and application efficiency

Reducing losses between the source and the plant is often the fastest way to save water.

Fix leaks and gate issues immediately. A single leak in a headgate or lateral can waste large volumes over days and weeks.
Line canals or replace long open ditches with pipelines where practical. Even partial lining or installing drop structures reduces seepage and improves delivery predictability.
Retrofit sprinklers and nozzles. Replace worn nozzles, calibrate pressure regulators, and adjust sprinkler spacing to reduce overlaps and wind drift.
Adopt low-pressure application. Lower operating pressure on pivots and sprinklers reduces evaporation and drift losses while improving distribution uniformity.

Even modest reductions in conveyance loss (5-15 percent) can free up water for additional applications or to extend the season.

Shift to higher-efficiency application methods where possible

Not every field or crop is a candidate, but shifting priority acreage to more efficient systems yields significant savings over a season.

Drip and micro-irrigation. Best for perennial orchards, high-value vegetable crops, and row crops planted on beds. Drip can cut water use 30-60 percent versus furrow irrigation and reduces evaporation.
Subsurface drip irrigation (SDI). Placing emitters below the soil surface minimizes evaporation and can be highly efficient for high-value crops. Installation costs are significant but can be justified on priority acreage.
Precise center pivots and linear moves. Use variable rate irrigation (VRI) to match application to soil and crop needs within a field. VRI reduces over-application on coarse soils and increases uniformity on variable terrain.
Improved furrow management. If furrow irrigation is the only option, implement surge irrigation, check structures, laser-leveling, and shorter runs to improve infiltration uniformity and reduce tailwater.

Evaluate capital costs versus expected water savings and crop value. For drought years, temporary measures such as contractor-installed drip or portable micro-irrigation can be cost-effective for high-value blocks.

Agricultural practices to reduce crop water demand

Complement irrigation changes with agronomic practices that lower crop water needs and stabilize yields.

Mulch and residue management. Apply organic or plastic mulch in vegetable and high-value crops to reduce evaporation from the soil surface.
Conservation tillage and cover crops. Maintain residue to reduce evaporation and improve soil structure. Select cover crops that conserve moisture or terminate them early in dry years.
Variety selection. Choose drought-tolerant varieties and shorter-season hybrids where yield at low water is prioritized.
Plant density and row spacing. Reduce plant population slightly to lower transpiration demand when water is limited.
Deficit irrigation protocols. Use partial root-zone drying or regulated deficit irrigation timed to less sensitive growth stages (e.g., post-anthesis management in some cereals) to save water without catastrophic yield loss.

Each practice has trade-offs. Pilot small areas before full-scale changes, and monitor yield and soil moisture responses carefully.

Maintain infrastructure and perform routine checks

Regular maintenance pays large dividends during drought when every drop counts.

Inspect and clean filters, screens, and emitters frequently to prevent clogging, especially in drip systems when water sources are low or turbid.
Verify pump efficiency and repair cavitation or leaks. A failing pump uses more energy and delivers less water.
Calibrate flow meters and measure actual delivered volumes at least weekly. Many operators overestimate deliveries when canal losses or pump inefficiencies exist.
Maintain on-farm storage. Small check dams or lined reservoirs can capture runoff and provide emergency supply during shortages.

Well-maintained systems reduce unplanned downtime and ensure water gets where it is intended.

Legal, regulatory, and community considerations

Wyoming has well-established water rights and regulation. During drought, coordination and compliance become more important.

Know your rights and priorities. Senior water rights holders are first in line during cutbacks. Consult state and local water managers to confirm allocation changes.
Communicate with water districts and neighboring irrigators. Cooperative sharing agreements, rotational delivery schedules, and temporary transfer arrangements can reduce conflicts.
Document water use. Metered records, receipts, and logs protect your position if allocations are disputed and help you track conservation progress.
Consider voluntary fallowing or water leasing programs. Leasing water to other users or enrolling in temporary transfer programs can provide income when reducing irrigated acreage.

Understanding legal frameworks prevents unintended losses and preserves long-term access to scarce water resources.

Emergency planning and contingency measures

Prepare a drought response plan before the worst conditions hit. Clear steps reduce stress and speed decision-making as water runs low.

Establish trigger points. Set soil moisture, reservoir level, or delivery volume thresholds that prompt specific actions (e.g., reduce irrigated area, shift to priority fields).
Prepare rationing schedules. Define how deliveries will be reduced across fields and who decides the ordering.
Stock critical supplies. Keep spare parts for pumps, valves, and filters on-hand to avoid service interruptions.
Pre-identify alternative feed sources. If forage production will be reduced, secure supplemental feed or grazing options in advance.

A written plan with assigned responsibilities reduces disputes and helps protect crop and livestock health under stress.

Financial and technical assistance options

Drought mitigation can be costly. Explore cost-share and technical programs offered by conservation agencies, state departments, and agricultural lenders.

Technical assistance. State extension services and conservation districts provide irrigation assessments, soil mapping, and planning help.
Cost-share programs. Many programs will fund partial replacement of inefficient systems, pipeline installation, or water-saving practices.
Low-interest loans and emergency assistance. Check available emergency loan programs that can bridge cash-flow gaps created by reduced yields.

Document project costs and expected water savings to make the case for funding. Small investments targeted to priority fields often provide the fastest return during drought years.

Practical takeaways and checklist

When drought tightens in Wyoming, focus on actions that save the most water per dollar and protect long-term productivity. The checklist below summarizes highest-priority moves.

Map water supplies, conveyance losses, and expected seasonal volumes.
Rank fields by economic and biological priority; designate fallow acreage early.
Install or rely on soil moisture sensors and use ET-based scheduling.
Repair leaks, line conveyances where feasible, and improve gate control.
Shift priority acres to drip, SDI, or VRI where costs are justified.
Adopt agronomic measures: mulch, reduced tillage, drought-tolerant varieties.
Maintain pumps, filters, meters, and irrigation hardware rigorously.
Know water rights, communicate with neighbors and water districts, and document use.
Prepare rationing and contingency plans with clear triggers and responsibilities.
Seek technical assistance and cost-share programs to fund efficiency upgrades.

Drought management is a blend of immediate operational fixes and strategic investments. By prioritizing high-value areas, improving delivery efficiency, and using data-driven scheduling, Wyoming irrigators can reduce water use significantly while protecting crop and soil health. Acting early, documenting decisions, and coordinating with local agencies will preserve production capacity and strengthen resilience against future dry years.