I can totally relate! After years battling yard erosion and standing water after storms, we finally called landscape team  branch last spring. They came out and did a full site analysis, identifying the drainage challenges and proposing solutions including trench drains, rain gardens to catch roof runoff, re-grading and topping with erosion-control mulch in trouble areas. We are now going into our second season mud- and mosquito-free! No more lawn damage either. My neighbor had a similar wet yard issue and also hired DBI Scarsdale to install a drainage system - they now have lush grass free of the previous swampy spots. Definitely would recommend!