Blog · October 14, 2026 · Washington
Using the Moses Lake GIS Map
Parcel data for Moses Lake comes from the county, and the viewer is free.
Main page: Grant County, WA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
Platbookmapper is an Amazon Associate. If you buy through an Amazon link on this page, we earn a commission. The link is a product, not the county map.
When land near Warden catches your eye, the Moses Lake GIS map shows the outline, the owner of record and a parcel ID. In this Moses Lake guide: where that map lives, how to search it, and the limits worth knowing.
Getting started with the Moses Lake GIS map
In most places the county maintains the parcel layer, and for Moses Lake that means the Washington Current Parcels layer in ArcGIS Map Viewer.
Pulling up a parcel
Your first stop is the Washington Current Parcels layer in ArcGIS Map Viewer; it covers each tax parcel around Electric City and Grand Coulee. Around Grand Coulee, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. For acreage around Ephrata, write down the parcel ID while you have it open; every records desk in the county asks for it first.
Moses Lake, WA: the basics
Moses Lake is part of Grant County, Washington, which means parcel data comes from the county. For a parcel near Electric City, City or town hall handles things like zoning, permits and utilities within town limits, while the county keeps the tax map. Land beyond the city limits out by Warden often answers to county rules rather than the town's.
Field tips
The parcel map usually runs in a mobile browser, useful out on a road near Grand Coulee, so load it before you lose signal. A saved image of the lot near Electric City and its lines helps when you meet an owner or agent.
Keeping a record
Save a screenshot of the lot near Grand Coulee and its record panel, which helps later when you ask the assessor or a title company.
A quick look at the area
Ephrata is the county seat, where most land records are kept. You'll also find Warden, Electric City, and George, each with its own cluster of lots. Roughly 102,678 people live in Grant County (Census Bureau estimate, 2023) across about 2,680 square miles. Grant County was organized in 1909, which matters when you trace an old farm's title. Features like Columbia National Wildlife Refuge help you orient on the aerial around Mattawa.
Search tips
Acreage around Warden might not have a street number, which means panning to it and clicking. Near Electric City, searching by parcel number never misses, and you'll find it on tax statements.
What the layers show
If the land is near Mattawa, layer lists often include zoning, flood zones, city limits, school districts or contours; not every viewer has them all.
What the record panel tells you
If sale dates appear, they help gauge the market near Grand Coulee are a useful starting point; an appraiser is the real authority.
Land on the county line
Grant County meets Adams County, Benton County, Douglas County, Franklin County, and Kittitas County; every one of them runs a separate parcel map. A tract near the line by Grand Coulee can show up in two county records, so look at the neighboring map as well. In and around Ephrata, our state page links every bordering county map across Washington.
A word on accuracy
The acreage figure is a tax-roll number; just a licensed surveyor sets the real lines for a parcel near Warden. Owner names and values update on a schedule, so a fresh transfer around Grand Coulee may not show yet.
Getting answers from the right desk
Anything recorded against property around Warden come from the County Auditor, often with an online index. Building or septic questions for a lot near Mattawa are for the local planning and health departments, depending on whether the land is inside town limits.
Browser tips
When the map won't open around Mattawa, switch browsers or turn off pop-up blockers; the Platbookmapper county page tracks the current link.
Legal descriptions in Washington
Washington is laid out under the Public Land Survey System, so deeds around Ephrata reference sections and townships. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though corrections make some sections near Mattawa odd-sized. Write down the legal description for the tract near George before you request a deed or survey.
Where the recorded documents are
The map is an index, not the title: recorded deeds, subdivision plats and easements for land near Ephrata are kept by the County Auditor. On ground around Ephrata, have ready the book and page shown in the record panel so staff can find the deed fast.
Questions about the Moses Lake GIS map
Does the Moses Lake parcel viewer cost anything?
Good question; the Washington Current Parcels layer in ArcGIS Map Viewer is free and opens without a login, though printing may be limited.
How current is the parcel data in Moses Lake?
If you're looking near Ephrata, updates come in batches.
What layers does the parcel viewer have around George?
Short answer: aerials near Electric City are usually available as a basemap; open the layer list to see what's there.
Can I use the Moses Lake GIS map for a fence near Ephrata?
The map near Warden isn't a survey; get a survey before a fence.
Is the parcel map a survey around Ephrata?
No; boundary questions near Ephrata need a licensed surveyor.
Open the official Grant County, WA parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.