Water Resources Engineering Simulations
A collection of interactive 3D visualizations and simulations to help you master concepts in water resources engineering.
Water Resources Planning and Management - Theory & Concepts
Comprehensive guide to Water Resources Planning including Project Formulation, Economic Analysis, Environmental Impact Assessment, Water Law, and System Optimization.
Benefit-Cost Analysis Simulator
Adjust the project parameters below to see how they affect the Present Worth of Costs, Present Worth of Benefits, and the final Benefit-Cost (B/C) Ratio.
PW of Costs
$197.29M
PW of Benefits
$315.24M
B/C Ratio:
1.60
Water Demand and Supply - Theory & Concepts
Detailed coverage of Water Demand and Supply including Population Forecasting, Types of Water Demands, Variations in Demand, and Sources of Water Supply.
Population Forecasting Models
Compare how different mathematical models project future population. Notice how the Geometric model (compound growth) diverges rapidly from the Arithmetic model (linear growth), while the Logistic model eventually flattens out as the city reaches its carrying capacity.
Arithmetic: Constant numerical increase (dy/dt = k).
Geometric: Proportional increase like compound interest (dy/dt = kY).
Logistic: S-Curve accounting for physical constraints like land/water limits.
Water Treatment - Theory & Concepts
Comprehensive overview of Drinking Water Treatment processes including Coagulation Chemistry, Sedimentation Types, Filtration, and Disinfection By-Products.
Coagulation/Flocculation Simulator
Adjust the raw water turbidity and the Alum coagulant dose to see the effect on floc formation and final settled water turbidity.
Process Results
- Floc Formation: None
- Estimated Settled Turbidity: 100 NTU
❌ Turbidity too high. Increase coagulant dose.
Wastewater Engineering - Theory & Concepts
Detailed coverage of Wastewater Engineering including Activated Sludge, Attached Growth Processes, Nutrient Removal, and Sludge Management.
BOD Exertion Kinetics
Visualize how Biochemical Oxygen Demand (BOD) is consumed over time. Adjust the Ultimate BOD ($L_0$), the reaction rate constant ($k$), and the water temperature to see how they affect the standard 5-day BOD ($BOD_5$).
Standard 5-Day BOD (BOD₅)
190
mg/L
Stormwater Management - Theory & Concepts
Detailed coverage of Stormwater Management including Urban Runoff, SCS Curve Number, Detention Basins, Low Impact Development (LID), and Culvert Design.
Urbanization Impact on Stormwater Hydrographs
Adjust the percentage of impervious area (pavement, roofs) to see how urbanization alters the natural hydrologic cycle. Notice how increased imperviousness causes a "flashier" response: a higher peak flow that arrives much sooner, increasing flood risk.
Peak Flow (Qp)
Time to Peak (Tp)
Runoff Volume Increase
+0%Dams and Reservoirs - Theory & Concepts
Comprehensive coverage of Dams and Reservoirs, including types, stability analysis, seepage through earth dams, and reservoir routing.
Gravity Dam Stability Analysis
Adjust the dimensions of the rectangular gravity dam and the water depth to see how the forces (Weight, Hydrostatic Pressure, and Uplift) affect the Factors of Safety against overturning and sliding.
F.S. Overturning
SAFE (≥1.5)3.21
M_res: 11520 | M_ovt: 3592
F.S. Sliding
SAFE (≥1.5)2.26
Assumes $\mu = 0.65$
Irrigation Engineering - Theory & Concepts
Detailed coverage of Irrigation Engineering including soil-water relationships, crop water requirements, salinity control, and irrigation efficiency.
Soil-Water-Plant Relationship Simulator
Adjust the soil properties (Field Capacity, Wilting Point), the crop root depth, and your Management Allowed Depletion (MAD) to calculate the Net Irrigation Requirement (the amount of water to apply per irrigation event).
Maximum water held against gravity.
Water unavailable to plants.
How dry the soil gets before we irrigate.
Total Avail. Water (AWC)
130
mmNet Irrigation Req. (d_net)
65
mmGroundwater and Wells - Theory & Concepts
Comprehensive overview of Groundwater and Wells, including aquifer properties, Darcy's Law, pumping tests, and groundwater recharge.
Darcy's Law Groundwater Flow Simulator
Adjust aquifer parameters to see the hydraulic head profile and calculate the steady-state discharge .