Sorry. I've read all of the threads and need to ask specifically about our situation.
Our house is almost 30 years old. We knew we had water issues when we bought, but we were assured that they were solvable. So we had the foundation dug. They dug down to the footers, sealed the foundation wall and added a membrane. Then the hole was filled with gravel. Two pipes run through the gravel. One is just to drain the foundation. The other is to carry away the water from the downspouts.
The crawlspace still gets wet!
The house has a roof that overhangs by two feet so water rarely falls at the base of the walls. The gutters and downspouts have been replaced by us too.
We are in a low spot and have a small creek about 75 feet and downhill behind the house. The drain system runs around the front and down one side of the house. The back and other side are dry. When it rains we often will have puddles around the property. Crawl space has plastic covering the dirt floor. The "dirt" under it is damp clay. Our crawlspace water stands around the walls of the foundation.