Stormwater asset inventory

Question

Question for those of you who have been a part of a stormwater asset inventory.

If you used sub-meter/sub-foot GPS receivers for the inventory, have you ever wished that you had used centimeter GPS receivers instead? If so, what was the need that the sub-meter/sub-foot units weren't able to meet?

Thanks folks.

Be well . . . Ray

JoeBryant1 · Answer

Great question, Ray! I'm now wondering this, too (I do most of my work on the potable water side, but am getting involved in more storm projects).

Our firm recently performed a pilot project with one of our clients where we used Collector and high-accuracy antennas to collect storm drain assets. We may have used a mix of centimeter and sub-meter units for this. I will ask our editors and analysts if it made much difference to them when they were cleaning up the data before delivering.

My hunch is the most important part would be the difference in vertical accuracy. But I believe we used the separately measured invert distances and LiDAR data for critical elevations.