Drain covers and blocked drains

I propose two extensions for tagging waterway=drain ways.

  1. Specific tags for how surface-visible drains are covered -

    • covered=metal_grating
    • covered=slabs
    • covered=no (open drains)
  2. blocked=yes or blocked_since= for blocked drains. In poorer areas of India (and presumably other countries), garbage may block drains for weeks, months, or even years. Sewage from such drains often pools into streets, resulting in increased cases of mosquito-borne diseases. This is certain to be valuable data for civic bodies.

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Ce sujet de discussion accompagne la publication sur https://community.openstreetmap.org/t/drain-covers-and-blocked-drains/106138