Water Management &
Floating Cover Calculators
Free tools for engineers and facility managers to accurately estimate cover requirements and surface area for ponds and tanks of any shape — with support for Imperial and metric units. Wastewater projects can pair calculator outputs with the specifier guide and anonymized application notes.
Surface Area & Coverage Estimator
Calculate total water surface area for one or more ponds or tanks
Showing all ponds/tanks side by side
Drag to rotate · Scroll to zoom · Pinch on mobile · Right-click to pan
Evaporation Loss Calculator
Estimate daily water loss using the Aerodynamic (Mass-Transfer) Method and see how much an AWTT cover saves
Tip: use the Surface Area Estimator above to calculate this value first
Measured at the surface. If blank, estimated as air temperature minus 2°C.
Deep ponds store heat, shifting evaporation seasonally. If blank, thermal storage is not modeled.
Higher elevations have lower atmospheric pressure, increasing evaporation rate.
Weather APIs report at 10 m. If your on-site anemometer is at a different height, enter it here to normalize to 2 m.
Long fetches allow the boundary layer to saturate, reducing downwind evaporation. If blank, no fetch correction is applied.
Dissolved salts lower the vapor pressure. ~1% reduction in evaporation per 1% salinity. Seawater ≈ 3.5%.
Get a Personalized Evaporation Report
Receive a detailed PDF with your site-specific evaporation analysis, product recommendations, and savings projections.
Thank you! Your personalized report will be emailed shortly.
ROI & Cost Savings Calculator
Compare operating costs — No Cover vs. Solid Cover vs. AWTT Modular Floating Cover
1 Global Parameters
Pond Size & Dimensions
Default: 5 ft if blank
2 Heating Costs
Use your energy bill, or select a thermal model to calculate from weather & pond parameters.
Heated flow-through: Water enters at inlet temperature, is heated to the target discharge temperature, and exits the pond. The model calculates surface heat losses + flow heating energy for each cover scenario.
Fetches current air temperature, humidity, and wind speed for the ASHRAE calculation.
Fetching weather data…
The temperature your pond needs to maintain for discharge.
Temperature of water entering the pond. Required for flow-through mode.
Daily volume of water flowing through the pond. Required for flow-through mode.
▸ Advanced ASHRAE Parameters
24-hour average (W/m²). Auto-calculated from weather data. Override to customize.
Soil temp at pond depth. Default: depth-adjusted estimate (Kasuda model) if blank.
Hours per year the pond needs heating. Default 8766 (year-round).
If you know your current energy bill, enter it here. The model will use this as the no-cover baseline and scale the covered scenarios by the physics-based reduction ratios.
Insulation slows heat loss — compared to bare water surface (R-0.5 baseline)
3 Chemical Treatment
Covers block UV light — reducing algaecide & chemical dosing by 60%
4 Pumping & Aeration
Biofouling increases pump load — covers eliminate algae and restore clean-water efficiency
Need a Custom Project Specification?
Our engineers provide detailed specifications, product recommendations, and pricing tailored to your exact pond dimensions and application requirements.