Narrative:

An IFR light of two requested vectors over the bridge for a tour. They were over the ocean level at 3;000 feet. I had my MVA map displayed as well as the new ZZZ class bravo airspace map along with my usual airspace map. The aircraft wanted to be as low as possible and I looked at what appeared to be aircraft X in a 2;300 foot MVA; so I descended him to 2;300 feet. The low altitude alarm went off; but after I saw it and figured out my mistake; aircraft X was northbound exiting the 2;600 foot MVA and flying into the 2;300 foot MVA. I was busy working airspace that I do not often work and I simply misread my MVA map. A possible solution would be to make the MVA map lines a different color than all the other lines.

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Original NASA ASRS Text

Title: A TRACON Controller reported they vectored an aircraft into an area below the Minimum Vectoring Altitude.

Narrative: An IFR light of two requested vectors over the bridge for a tour. They were over the ocean level at 3;000 feet. I had my MVA map displayed as well as the new ZZZ Class Bravo airspace map along with my usual airspace map. The aircraft wanted to be as low as possible and I looked at what appeared to be Aircraft X in a 2;300 foot MVA; so I descended him to 2;300 feet. The Low Altitude alarm went off; but after I saw it and figured out my mistake; Aircraft X was northbound exiting the 2;600 foot MVA and flying into the 2;300 foot MVA. I was busy working airspace that I do not often work and I simply misread my MVA map. A possible solution would be to make the MVA map lines a different color than all the other lines.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.