How do you verify the accuracy and currency of online plat maps?

1 Check the source

The first step to verify the accuracy and currency of online plat maps is to check the source of the data. Who created the map, when, and for what purpose? Is the source reputable, authoritative, and transparent? Does the source provide any metadata, quality control, or disclaimer information? You should look for sources that are official, such as county offices, state agencies, or federal organizations. You should also look for sources that are updated regularly, such as GIS platforms, or that indicate the date of the last revision, such as PDF files.

2 Compare multiple maps

The second step to verify the accuracy and currency of online plat maps is to compare multiple maps from different sources. You should look for consistency, agreement, and alignment among the maps. You should also look for discrepancies, conflicts, and gaps among the maps. For example, you should compare the parcel boundaries, lot numbers, ownership records, easements, and encroachments among the maps. You should also compare the scale, projection, datum, and coordinate system among the maps. If you find any differences or errors, you should investigate the cause and determine which map is more reliable.

3 Verify with field survey

The third step to verify the accuracy and currency of online plat maps is to verify with field survey. You should not rely solely on online plat maps for your surveying project. You should always conduct a field survey to confirm the actual conditions and measurements of the land. You should use appropriate surveying equipment, methods, and standards to collect accurate and precise data. You should also use legal documents, such as deeds, titles, and surveys, to verify the ownership and history of the land. You should compare your field survey data with the online plat maps and resolve any discrepancies.

4 Consult with experts

The fourth step to verify the accuracy and currency of online plat maps is to consult with experts. You should seek advice from professionals who have experience and knowledge in land surveying, mapping, and property law. You should ask them for recommendations, opinions, and feedback on the online plat maps you are using. You should also ask them for referrals, resources, and contacts that can help you with your surveying project. You should consult with experts who are licensed, certified, or accredited in your state or jurisdiction.

5 Use caution and common sense

The fifth step to verify the accuracy and currency of online plat maps is to use caution and common sense. You should not assume that online plat maps are accurate or current without verifying them. You should not use online plat maps for legal or official purposes without validating them. You should not rely on online plat maps for complex or sensitive surveying projects without supplementing them. You should always use your professional judgment, ethical standards, and best practices when using online plat maps.

6 Keep learning and improving

The sixth step to verify the accuracy and currency of online plat maps is to keep learning and improving. You should stay updated on the latest trends, technologies, and regulations in land surveying and mapping. You should explore new sources, tools, and methods for accessing and using online plat maps. You should also evaluate your performance, results, and feedback from your surveying projects. You should learn from your mistakes, challenges, and successes. You should always strive to improve your skills, knowledge, and quality in land surveying and mapping.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?