TJ, make sure you give the water plenty of time to warm up after ice out before sampling the shallows. It may take the shrimp a while to migrate out of their deep water wintering grounds back into the shallows...
PK shrimp typically spawn twice a year. Once in mid spring which is their big spawn and then a second time in the late summer to early fall which is their smaller spawn. The other P. shrimp species are very similar in their spawning times. I have a lot more experience with those species. They tend to be most abundant in late summer. They kinda almost disappear after they spawn as most of the adults die off and all you're left with a small juveniles which are hard to catch in nets as they slip through the holes and very tiny larvae.
