The Clatsop County map system or GIS is something I use daily. You can access specific tax lot information and maps are your leisure. Searching can be a bit tricky, until you learn to master the map & tax lot key. A great exercise is to search by owner name, and examine the record of your own property. That gives you an idea of what is published online, and where to look for it. When trying to find the owner of an Astoria home, or specific info on a neighboring property the GIS website is an awesome tool.