Isopleth

Isopleth maps simplify data that is continuously distributed. Shows data as a third dimension on the map. The isopleth map below shows the total precipitation for 1996.
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtsGc1yC07_n2cirXXA5XyELHuefBoaWp7Y_vc8Ee_SI5Jl5T6TYHkZ0N6n7Xt5-y3k0NwHxOKeqkzfiu2z9FwGj2imICFmqzQYCvFblLFnYnoDnNzxFer1sWgdvtkMrOkCAUEuOzac6g/s1600/precip1996.gif