Wondering if it is ever appropriate to do a partial culvert assessment. We came upon a culvert that upstream appeared to be a dry stream bed. However, there was water inside the culvert, a pool at the outlet and water was draining out of the pool downstream. Would it be appropriate to attempt to take parameters in the upstream portion, even if it's dry (bankfull's)? Or should we only do the lower half which had water? We were able to gather data for all downstream parameters.
Or should this culvert be listed as "not surveyable"?
(Top photo is from downstream looking into culvert upstream. Bottom photo is from road looking upstream into dry stream bed.)