Water has always been the lifeblood of agriculture. But in 2026, that lifeblood is under more pressure than at any point in modern farming history. Drought cycles are intensifying, water rights are being curtailed, costs per acre-foot are climbing, and regulators are tightening limits on agricultural water use from California to the Texas Panhandle.
Meanwhile, millions of gallons evaporate from open farm ponds, irrigation reservoirs, dairy lagoons, and tail-water recovery basins every single year — losses that most agricultural operators accept as inevitable.
They are not inevitable. Modular floating covers now allow farms, ranches, dairies, and irrigation districts to reduce evaporation losses by 90% to 98%, with no heavy equipment, no pond modification, and typical payback periods of 12 to 24 months.
At AWTT, we have deployed floating cover systems across 700+ installations in 25 countries, totaling more than 20 million square feet of covered water surface. A growing share of those installations serve agriculture — and the results are transforming how operators manage their most critical resource.
The Agricultural Water Crisis Is Here
This is not a future problem. It is happening now.
Drought is the new normal. The western U.S. has experienced its driest 23-year stretch in over 1,200 years. Lake Mead and Lake Powell have dropped to historically low levels. The Ogallala Aquifer, which irrigates roughly 30% of all U.S. cropland, is declining faster than it can recharge in major sections of Kansas, Texas, and Oklahoma.
Water rights are being cut. In 2024 and 2025, irrigation districts across Arizona, Colorado, and California saw allocations reduced by 15% to 40%. Junior water rights holders in parts of the Colorado River Basin received zero allocation in some years. Every gallon that evaporates from a storage pond is a gallon that cannot be applied to crops.
Costs are rising. Agricultural water rates have increased 20% to 60% in many western districts over the past five years. In parts of California’s Central Valley, supplemental water purchases during drought can exceed $1,500 per acre-foot — up from $200 to $400 a decade ago.
Regulatory pressure is mounting. State and federal agencies are increasingly requiring agricultural operations to demonstrate water conservation measures. Dairy and livestock operations face additional scrutiny under Clean Water Act and Clean Air Act provisions, particularly for lagoon emissions.
The bottom line: agricultural operations that fail to conserve stored water are losing money, losing water rights leverage, and increasing regulatory exposure.
Where Agricultural Operations Lose Water
Evaporation is silent and relentless. It does not show up as a leak on a maintenance report. But the losses are enormous, and they come from every open water surface on a farm or ranch.
Irrigation storage ponds. These are the workhorses of western agriculture — holding water drawn from wells, canals, or rivers for scheduled irrigation. They are typically 1 to 20 acres, fully exposed to sun and wind, and lose water continuously from the moment they are filled.
Tail-water recovery basins. Designed to capture irrigation runoff for reuse, these shallow basins have high surface-area-to-volume ratios, making them especially vulnerable to evaporation. In many cases, 20% to 30% of recovered water is lost before it can be recirculated.
Dairy lagoons. Dairy wastewater lagoons serve as both storage and treatment. They are typically 2 to 10 acres and lose water to evaporation year-round — but they also emit ammonia, hydrogen sulfide, and volatile organic compounds that create odor complaints and regulatory violations.
Livestock wastewater ponds. Feedlot and swine operations generate large volumes of nutrient-rich wastewater. Open storage accelerates both evaporation and algae growth, increasing treatment costs and odor issues.
Aquaculture ponds. Fish and shrimp farms require stable water levels and temperatures. Evaporation forces continuous makeup water additions and can concentrate dissolved solids to harmful levels.
How Much Water Are You Actually Losing?
The numbers are larger than most operators expect.
A single 5-acre uncovered pond in an arid region (annual evaporation rate of 60 to 80 inches) loses approximately 1.0 to 1.4 million gallons per acre per year. That is 5 to 7 million gallons annually from one pond — enough to irrigate 15 to 20 acres of alfalfa or 25 to 35 acres of grain crops for an entire growing season.
Here is what the data looks like across common agricultural regions:
| Region | Annual Evaporation Rate | Loss Per Acre (gal/yr) | Loss for 5-Acre Pond (gal/yr) |
|---|---|---|---|
| California Central Valley | 55–70 in | 1.5–1.9 million | 7.5–9.5 million |
| Texas High Plains | 65–80 in | 1.8–2.2 million | 9.0–11.0 million |
| Arizona / Southern Nevada | 80–100+ in | 2.2–2.7+ million | 11.0–13.5+ million |
| Pacific Northwest | 35–45 in | 0.9–1.2 million | 4.5–6.0 million |
| Midwest (Iowa, Illinois) | 40–55 in | 1.1–1.5 million | 5.5–7.5 million |
| Southeast (Georgia, Florida) | 45–60 in | 1.2–1.6 million | 6.0–8.0 million |
Data based on AWTT field measurements, Class A pan evaporation records adjusted for open water, and TWDB/NOAA regional datasets.
Want to see the exact number for your location? Our free Evaporation Loss Calculator uses real-time weather data and the aerodynamic mass-transfer method to estimate losses for your specific pond dimensions and coordinates — no sign-up required.
How Modular Floating Covers Solve the Problem
Modular floating covers work on a simple principle: block the interface between water and atmosphere. When you eliminate direct solar radiation on the water surface and suppress wind-driven vapor transfer, evaporation drops dramatically.
Evaporation reduction of 90% to 98%. Depending on the cover type and surface coverage, AWTT systems reduce evaporation by 90% (Armor Ball) to 98% (Rhombo Hexoshield and Hexprotect MAX R). For a 5-acre pond in the Texas High Plains, that translates to 8 to 10 million gallons saved per year.
Algae elimination. By blocking 99% of sunlight penetration, high-coverage floating covers starve algae of the photosynthetic energy they need to grow. Operators routinely report 60% or greater reductions in chemical treatment costs after installation. No more copper sulfate, no more algaecide cycling, no more clogged irrigation filters from algae blooms.
Odor control for dairy and livestock lagoons. Floating covers trap volatile gases at the water surface, reducing hydrogen sulfide and ammonia emissions by 80% or more. This is not just about neighbor relations — it is about staying compliant with state air quality regulations and CAFO (Concentrated Animal Feeding Operation) permit conditions. Learn more about odor control solutions.
Wildlife and bird deterrence. Open agricultural ponds attract waterfowl, which introduce biological contamination and can create issues under migratory bird regulations. Floating covers make the water surface inaccessible without harming wildlife.
Best AWTT Products for Agricultural Applications
Not every farm pond needs the same cover. AWTT offers multiple product lines engineered for different conditions and budgets. Here are the three most commonly deployed in agriculture.
Armor Ball — Budget-Friendly Coverage for Standard Ponds
The Armor Ball is the most cost-effective entry point for agricultural water conservation. These individual floating spheres achieve 91% surface coverage and reduce evaporation by up to 90%. They are ideal for:
- Irrigation storage ponds with moderate wind exposure
- Tail-water recovery basins
- Operations that need to start saving water now on a limited budget
- Ponds where occasional access (pump boats, sampling) is needed — balls move aside and self-heal
Armor Ball units are made from UV-stabilized HDPE, carry a 10-year warranty, and require zero maintenance after deployment.
Hexprotect AQUA — Maximum Performance for Wind-Exposed Sites
The Hexprotect AQUA is a hexagonal interlocking tile that achieves 99% surface coverage and up to 95% evaporation reduction. Its interlocking geometry resists wind displacement at sustained speeds exceeding 130 mph, making it the right choice for:
- Large irrigation reservoirs on open plains (Texas Panhandle, San Joaquin Valley, eastern Oregon)
- Exposed farm ponds where wind routinely exceeds 30 mph
- Dairy lagoons requiring both evaporation and odor control
- Any site where wind has caused problems with other cover types
The AQUA’s hexagonal design also provides superior algae suppression due to its near-complete light blockage.
Hexprotect SLIM — Cost-Effective Interlocking for Sheltered Lagoons
The Hexprotect SLIM shares the interlocking hexagonal geometry of the AQUA but with a slimmer profile, offering a lower price point for sheltered or semi-sheltered applications:
- Dairy lagoons surrounded by berms or tree lines
- Smaller livestock wastewater ponds
- Aquaculture ponds in low-wind environments
- Farm ponds with natural wind protection
All three products are available for review and comparison on our products page.
Dairy Lagoon Applications: Odor, Ammonia, and CAFO Compliance
Dairy operations face a unique set of challenges that make floating covers particularly valuable.
Odor complaints are the number-one regulatory trigger for dairies. A single sustained odor complaint from a neighbor can initiate a state inspection, and repeated violations can result in fines, operational restrictions, or permit denial. Floating covers reduce hydrogen sulfide emissions — the primary source of “rotten egg” odor — by 80% to 95% at the lagoon surface.
Ammonia reduction protects both air quality and nutrient value. Open dairy lagoons lose significant nitrogen to the atmosphere as ammonia gas. This is simultaneously an air quality issue (ammonia is a precursor to particulate matter) and an economic loss — that nitrogen has fertilizer value. Floating covers retain ammonia in solution, keeping it available for land application while reducing air emissions.
CAFO regulations are tightening. The EPA and state agencies are expanding CAFO permit requirements for medium and large dairy operations. Demonstrating best management practices for lagoon emissions strengthens permit applications and reduces enforcement risk. Several state CAFO programs now specifically recognize floating covers as an approved emission control technology.
Neighbor relations matter. Even where odor complaints have not yet triggered regulatory action, they damage community relationships that dairy operations depend on for zoning approvals, expansion permits, and general goodwill. Proactive odor control is an investment in the operation’s long-term viability.
For detailed information on dairy-specific applications, visit our dairy industry page.
Irrigation District Applications: Stretching Every Acre-Foot
Irrigation districts operate at a scale where evaporation losses compound into staggering volumes. A district managing 500 acres of storage and conveyance surface area in central Arizona could be losing 1 billion gallons per year to evaporation — water that has already been paid for, allocated, and pumped.
Water conservation directly extends supply. When a district reduces evaporation by 95% across its storage facilities, the recovered water is functionally equivalent to developing a new water source — without the permitting, infrastructure, or political challenges.
Drought resilience improves. Districts with covered storage can maintain deliveries through allocation cuts that would force uncovered districts into curtailment. The 90% to 98% reduction in evaporation losses provides a buffer that grows more valuable as droughts intensify.
Water rights management benefits. In prior appropriation states, demonstrating beneficial use and conservation can strengthen a district’s position in water rights adjudications. Covered storage shows regulators and courts that the district is maximizing the value of every allocated acre-foot.
Cost per acre-foot delivered drops. When you save 90%+ of evaporation losses, the effective cost of water delivered to growers decreases — even after accounting for the cover investment. This translates directly to lower assessments or improved district financial stability.
For districts exploring evaporation reduction at scale, AWTT provides engineering support for multi-pond deployments, including coverage calculations and phased installation planning.
ROI for Agricultural Operators: The Numbers That Matter
Agricultural operators are practical. Here is what the financial picture looks like.
Water savings value. At current agricultural water rates of $200 to $1,500+ per acre-foot (depending on region and source), saving 5 to 10 million gallons per year from a 5-acre pond translates to $3,000 to $45,000+ in annual water value recovered. Operations purchasing supplemental water during drought see the highest immediate returns.
Chemical cost reduction. Eliminating algae growth typically reduces chemical treatment costs by 60% or more. For a pond that requires $2,000 to $5,000 per year in algaecide and related chemicals, that is $1,200 to $3,000+ in annual savings.
Reduced pumping costs. Less evaporation means less makeup water needs to be pumped. For operations drawing from deep wells, reduced pumping can save $1,000 to $4,000+ annually in energy costs per pond.
Maintenance reduction. No algae means fewer clogged filters, fewer irrigation system cleanouts, and less biofilm buildup in distribution lines.
Typical payback: 12 to 24 months. When you stack water savings, chemical reduction, pumping savings, and maintenance reduction, most agricultural floating cover installations pay for themselves within one to two irrigation seasons. Operations in high-evaporation regions or those purchasing supplemental water often see payback in under 12 months.
Use our free ROI calculator to model the payback for your specific operation.
Installation on Farm Ponds: Simpler Than You Think
One of the most common concerns we hear from agricultural operators is that covering a pond sounds like a major construction project. It is not.
No heavy equipment required. Modular floating covers are deployed by hand or with a small crew from the pond bank. Individual Armor Ball units are light enough for one person to toss. Hexprotect tiles interlock on the water surface and can be placed by two to three workers.
No pond modification needed. The covers float on the existing water surface regardless of depth, bottom contour, or liner type. No anchoring, no structural supports, no bank grading.
Works with irregular shapes. Farm ponds are rarely perfect rectangles. Modular covers conform to any shape — kidney-shaped reservoirs, L-shaped lagoons, ponds with islands or inlet structures. The units simply fill the available surface area.
Water level changes are not a problem. As levels rise and fall with irrigation cycles, the floating cover rises and falls with them. There is no rigid structure to accommodate — the cover tracks the water surface automatically.
Livestock-safe. Armor Ball and Hexprotect covers present no entanglement or ingestion hazard to cattle, horses, or other livestock that may access pond edges. The individual units are too large to be swallowed and too buoyant to trap an animal.
Fast deployment. A typical 3- to 5-acre farm pond can be fully covered in one to two days with a small crew. There is no curing time, no welding, and no waiting for weather windows. The cover begins reducing evaporation immediately upon deployment.
Take the First Step
Every day an agricultural pond sits uncovered, water is leaving — silently, continuously, and expensively. In a market where every acre-foot matters, recovering 90% to 98% of evaporation losses is one of the highest-ROI investments an agricultural operation can make.
Here is how to get started:
- Calculate your losses. Use our free evaporation and ROI calculators to see what your ponds are costing you right now.
- Explore product options. Visit our product comparison page to see which cover type fits your application, budget, and site conditions.
- Talk to our agricultural team. Contact AWTT for a site-specific recommendation, coverage estimate, and quote. We work with operations of all sizes — from single farm ponds to district-wide deployments across hundreds of acres.
Water saved is water earned. And in 2026, there is no cheaper source of “new” water than the water you are already losing.