I measured my house's incoming water pressure to be 70 psi with no flow. It drops to 60 psi if I run a bathroom faucet full; 20 psi if I run the tub faucets full; and 0 psi if I run my irrigation system. Since my irrigation system is inoperable, I am manually watering and can only run one spinkler at a time, and even that sometimes will not rotate due to inadequate flow. Also, my city water meter shows no flow when water running.

This problem appeared suddenly following the city repairing a broken main 3" water line two houses from me. I have always had good pressure and flow in the 16 years in the house. None of my neighbors are having this issue. Hence, my theory is that the recent maintenance knocked something loose that has clogged my water meter, restricting flow and meter functioning, but not static pressure.

Of course the water company wants me to call a plumber, and I am trying to convince them to come check my water meter.

Has anyone experienced a similar occurrence?

happens all the time.
it is just a question of WHERE the debris has collected.

I would insist that the Water Company come check their meter. Just because they have a monopoly does not excuse them from responsibility for their equipment. If you get more resistance, call the City or Authority on utilities and make your complaint known to them. Hope you get their attention.

The water meter was the problem. I was sufficiently pesky that the city finally sent a serviceman, who upon assessing, agreed it was likely the meter. Took them about 10 min to install a new meter, after which both pressure and flow are back to normal. Thanks for supporting comments.