What is the required scale for provincial base maps in the Philippines?

The required scale for provincial base maps in the Philippines is 1:400,000. This scale has been set to ensure that the maps provide a sufficient level of detail for local governance, planning, and resource management purposes while still being manageable in size and easy to read. A scale of 1:400,000 allows for the representation of a province's layout, including important features such as roads, bodies of water, and administrative boundaries, without overwhelming the map with excessive detail that would be present at a larger scale. This balance of detail and clarity is crucial for effectively communicating geographic information to decision-makers and the public within the province.