Hi Everyone! I've been reading up on this subject now for a while and I think it's finally time for me to pull the trigger. I'm going to start looking for someone to build us a small pond. Roughly 50 x 90 which is 1/10th of an acre. I do have a few questions before I have anyone come out just so I know what to look for

I'm creating a two acre conifer garden... the main reason for the pond is for the view. However, the area the pond will be built is slightly lower than the rest of the yard (maybe just a few inches). It stays wet during the winter/spring seasons so I'm unable to plant any trees/shrubs/flowers in this area which is why I selected it for the pond. I just want to make sure this low area is alright because I don't really want them to build up the soil any because I'm hoping this pond will help drain excess surface water from the rest of the property. The soil is mostly clayish.

1. Will this low area be alright? I'm hoping it will help drain water off the rest of the land during heavy rains

2. What is a keyway & dam? I kind of know what they are, is the dam just another hole they dig in the ground with an access way towards the top of the pond for overflow? My land is completely flat for the most part.

3. I know the cost will vary a lot depending on location. I understand that... what I'm reading the majority say between 10-20K an acre. Since I'm doing 1/10th of an acre... should I expect to pay anymore than 4-5K?

Sorry if these are dumb questions, but this topic is new to me.