I'm sure this isn't the correct place to post this but it seems those of you posting here might know the answer to my question...
My property backs up to the Philadelphia Main Line tracks (between the Radnor, PA and St. Davids, PA stations). I believe there is an old stormwater runofff drain that runs from the back of my property and under the tracks - I can see the other side where the water was meant to discharge (it is about a 20" by 30" rectangular opening built with brick about 15' below the grade of the tracks. I can look up this opening at least 50-60' with a flashlight but cannot find the opening/inlet on my side of the tracks. Thus, I am fairly certain I (or my neighbor) have an inlet that has been covered over from years of storms and debris - after a storm we get a huge puddle/pond in that area and it's becoming a problem in terms of safety with my 3 and 5 yr olds and bugs, etc.
OK. My question. Where might I find a blueprint/chart that would tell me where this inlet is located in terms of distance offset from the tracks and depth? Does this information exist online? Any help or advice would be greatly appreciated!