The reason: I live in a small waterside town and we are very concerned over our water table. The problem is that we don't have a lot,if any, research or organized data to back up important decisions. The problem is that no one is informed on what they're talking about, many regulations are based on hypotheses, opinions, and bias. I'm interested in making a model for some of the hot topics: Catching rain water Septic contamination Fertilizer/pesticide contamination Filter methods (Costal erosion if possible) What I need: I need a program that can simulate fluid dynamics with at least the following variables: time flow rate/porosity rate of decay can simulate rain (intensity + duration) rate diffusion color of fluids(to track them) Capabilities: 3d visual/graphic display ability to over lay the following maps and account for variables: topographic (contours->water flow) water table topography (depth and fluctuations) sediment map (porosity) microbial map(depth+decay rate of contaminate) simulate wells(rate of water out+depth+location) septic systems(rate of water and contaminates in+depth+location) penetration and filtration of salt water shows me water quality at test points or where I click If I haven't accounted for anything important please let me know! These are just the ideal needs, if you know of anything similar, I would really appreciate it! I understand it won't be perfect, but it should give an idea of where to look for problems. hopefully spectrometry, gel electrophoresis, and chemical testing can provide enough evidence to backup or revise our regulations.