Exact Coordinates For Washington State Might Surprise You
Exact coordinates for Washington State
Washington State's official geographic center coordinates are approximately 47.7511 degrees North latitude and -120.7401 degrees West longitude. This pairing places Washington in the Pacific Northwest, spanning coastal regions to the Puget Sound and inland basalt plateaus. Geographic context matters because these coordinates underpin mapping, navigation, and spatial analysis for government, industry, and researchers.
In practical terms, the commonly cited coordinates used by mapping services align closely with the state's continental boundaries and major geographic landmarks. These numbers serve as a reference point for geospatial datasets, emergency planning, and logistics operations that require consistent, repeatable location tagging. Spatial accuracy is critical for coordinating cross-border traffic, weather monitoring, and large-scale infrastructure projects across the state's diverse terrain.
Coordinates in multiple formats
Below is a representative set of Washington State coordinates in different commonly used formats. Each format yields the same geographic location, just expressed differently for compatibility with various systems. Format differences matter for data interchange and software parsing.
- Decimal degrees: 47.751074, -120.740139
- Degrees, minutes, seconds (DMS): 47° 45' 3.8664" N, 120° 44' 24.5004" W
- Degrees and decimal minutes: 47° 45.0644' N, 120° 44.4083' W
For technical applications, some systems prefer the NMEA format or universal transverse Mercator (UTM) coordinates. The following illustrates the same point in a couple of niche formats that are occasionally used in specialized GIS and surveying workflows.
- NMEA (DDDMM.MMMM): 4745.0644,N,12044.4083,W
- UTM (zone 10T coordinates): Easting 669380.95, Northing 5291107.22
Why precise coordinates matter now
Accurate coordinates underpin disaster response planning, climate modelling, and critical infrastructure resilience. A misalignment of a few hundred meters can complicate evacuation routing, sensor network deployments, and asset tracking across state lines. In recent years, Washington State has intensified its emphasis on geospatial coordination for wildland fire management, flood planning, and seismic monitoring, where exact coordinates reduce ambiguity and speed up decision-making. Geospatial governance is increasingly data-driven, with state agencies adopting standardized coordinates to unify datasets from counties, tribes, and federal partners.
Historical context
Washington's coordinate conventions have evolved from early surveying missions completed in the late 19th and early 20th centuries to modern GIS-enabled mapping decades later. The decimal latitude of approximately 47.7511° N is grounded in traditional surveys that anchored the state's northernmost boundary near the 48th parallel and its western edge along the Pacific coastline. The longitudinal reference at roughly -120.7401° W reflects the state's position relative to the continental United States' central meridian system. Historical datasets often preserve these values to maintain continuity with legacy maps used in land records and environmental planning.
Practical applications
Businesses and government agencies use exact coordinates to situate infrastructure, plan transportation corridors, and calibrate location-based services. For example, utility networks rely on precise coordinates to map transmission lines, water mains, and service suburbs; emergency services use standardized coordinates to optimize response times; and researchers correlate climate data with exact geolocations to model regional patterns. Applications across multiple sectors hinge on consistent coordinates to prevent misallocation of resources and delays in critical operations.
FAQ
Comprehensive data table
The following table consolidates the principal coordinate representations for Washington State. The values are chosen to illustrate cross-format compatibility and are intended for demonstrative purposes in this article.
| Format | Coordinate | Notes |
|---|---|---|
| Decimal degrees | 47.751074, -120.740139 | Standard for most GIS and web maps |
| Degrees, minutes, seconds | 47° 45' 3.8664" N, 120° 44' 24.5004" W | Human-readable; precise to 0.0001 seconds |
| Degrees and decimal minutes | 47° 45.0644' N, 120° 44.4083' W | Common in some surveying datasets |
| NMEA | 4745.0644,N,12044.4083,W | NMEA sentence fragment used in GPS devices |
| UTM (zone 10T) | E:669380.95, N:5291107.22 | Useful for high-precision land surveying |
Additional notes for readers
When embedding Washington State coordinates into articles, datasets, or dashboards, consider documenting the datum used (for example, WGS84 is standard for GPS, while NAD83 may be used in some regional surveys). Datum consistency ensures that outputs remain comparable across platforms and over time. Datum alignment is essential for long-term data integrity and interoperability.
Related resources
For readers seeking deeper technical references, consult official state Geographic Information System (GIS) portals and national geospatial frameworks that provide coordinate metadata, datum specifications, and tooling for converting among formats. These resources help maintain precision when integrating Washington State coordinates with county-level datasets, tribal GIS layers, and federal geospatial programs. Resources empower practitioners to verify and reproduce coordinate-based analyses.
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