We ran into a situation where we could not measure the total height of an embedded concrete culvert pipe due to the presence of large cobbles/gravel in the pipe and the depth of the stream at the culvert inlet. We attempted to use the depth rod like a rock bar and move some of the cobbles out of the way but it was a futile effort. What do you guys recommend doing in these types of situations? Estimate height? Leave blank?
We will make sure to leave detailed comments in any scenario.
Response from Tom T.- If you can't easily measure to the bottom of the embedded culvert to get the total height / rise (D), then leave it blank and note in comments. If it is a circular culvert, there is no measurement D, since it is just the same as A. For an embedded elliptical or pipe arch culvert, you do what you can. If it is easy to tell, then record D - if not, put in comments something like 'Couldn't record D' - so we know it was truly an embedded culvert and D wasn't left blank by accident.