Flood Probability Depth

Flood Probability Depth Flood Tiles represents flood inundation with 5 depth thresholds for the specified return period and year.

https://api.firststreet.org/v2/maps/tile/flood/probability/depth/{relativeYear}/{returnPeriod}/{zoom}/{x}/${y}.png

Representation of: maps/tile/flood/probability/depth/0/20/13/2100/3047.png

Parameters

relativeYear

The relativeYear represents a year value relative to the current year. For example, 0 would represent this year and 5 would represent this year plus 5 years from now. In order to reduce developer maintaince, we suggest using the relative year notation to implement updates.

Supported Years
0
15
30

returnPeriod

The returnPeriod represents the probability.

Supported Return Periods
2
5
20
100
500

Tile Legend

These are the current color representation of our Flood Map layers. These colors were last updated on March 12, 2024. (apply a 65% opacity to the base hex)

Depth of Flooding (ft.)

0 - #A1D3FF
0.5 - #58B4FF
1 - #2672DE
2 - #222FBF
3+ - #212463