Gwegan and Ummgood, thank you both for all of the information. We are putting a wall up on the backside of the pool, but I will look into additional options to ensure drainage around the pool. A muddy pool sounds like a nightmare! 
Andy,I did my entire O/B with just one small paper sketch. No one asked for anything more than that. My county doesn't require drawings like the one above for houses, much less a simple pool.
Andy,
I think I could get away with that as well. I want more detailed plans because I think it leaves less room for interpretation. That being said here in Texas there can be a significant language barrier if you are not fluent in Spanish. So my thoughts are that the more details and pictures the better my odds of getting what I want the first time.