If it is park-like and walkable with meandering meadows making it good for horses, and usually the most sought after type land, expect to pay more. Hated to even mention it because everyone wants it and it really goes for a premium, but it has to be said. Colorado is an arrid state and if you can find water on the land, it is usually a small creek. Well, if you want to raise any livestock including horses, chickens or cows, you must have a domestic well. This allows usage of water outside your home for the purposes of your domestic animals, your lawn and gardens, and technically even washing your cars.
Water laws are very complex here in Colorado.
We even have our own water courts complete with it's own judges. As mentioned above, Colorado is an arid state. Basically, a water right would only apply if you have surface water, like a creek or stream. The right to use that surface water is deeded seperately from the land, and is not included when you buy the land. Besides, they are not necessary unless you want to do some sort of commercial business and a well is far more practical for everyday living.