{{Distinguish|Basalt Deltas}}
{{Infobox structure
| title = Delta
| image = Delta iso render.png
| biome = {{BiomeLink|Basalt Deltas}}
| blocks =
* {{BlockLink|Lava}}
* {{BlockLink|Magma Block}}
| canspawn = No
}}
A '''delta''' is a one-block-deep sheet of constrained [[lava]] found among the terrain of [[basalt deltas]] biome in [[the Nether]].

== Description ==
Deltas are one-block-deep terraced lava lakes, often divided by lines of [[blackstone]]. [[Magma block]]s also generate as part of these [[Structure|generated structure]]s, replacing some of the lava. Deltas tend to be adjacent to or surrounded by [[basalt column]]s.

== Data values ==
=== ID ===
{{el|je}}:
{{ID table
|firstcolumnname=Feature type
|displayname=[No displayed name]
|spritename=delta
|spritetype=env
|nameid=delta_feature
|foot=1}}

{{ID table
|firstcolumnname=Configured feature
|displayname=[No displayed name]
|spritename=delta
|spritetype=env
|nameid=delta
|foot=1}}

{{el|be}}:
{{ID table
|firstcolumnname=Feature
|displayname=[No displayed name]
|spritename=delta
|spritetype=env
|nameid=delta_feature
|foot=1}}

=== Config ===
{{el|java}}:
{{see also|Custom feature}}
{{/Config}}

{{Collapse|title=An example|head=1}}
<syntaxhighlight lang="json">
{
  "type": "minecraft:delta_feature",
  "config": {
    "contents": {
      "Name": "minecraft:lava",
      "Properties": {
        "level": "0"
      }
    },
    "rim": {
      "Name": "minecraft:magma_block"
    },
    "rim_size": {
      "type": "minecraft:uniform",
      "value": {
        "max_inclusive": 2,
        "min_inclusive": 0
      }
    },
    "size": {
      "type": "minecraft:uniform",
      "value": {
        "max_inclusive": 7,
        "min_inclusive": 3
      }
    }
  }
}
</syntaxhighlight>
{{Collapse|tail=1}}

== History ==
{{HistoryTable
|{{HistoryLine|java}}
|{{HistoryLine||1.16|dev=20w15a|Added deltas.}}
|{{HistoryLine||1.17|dev=20w45a|Due to a bug,<ref>{{bug|MC-203574}}</ref> deltas no longer generate.}}
|{{HistoryLine|||dev=20w46a|Deltas now generate again in [[the Nether]].}}
|{{HistoryLine|bedrock}}
|{{HistoryLine||1.16.0|dev=beta 1.16.0.57|Added deltas.}}
}}

== Issues ==
{{Issue list}}

== Gallery ==
=== Screenshots ===
<gallery>
File:Low lava delta.png|A large delta near the lava oceans.
File:Smalldelta.png|Small delta next to the lava ocean.
File:Lava delta.png|Several stacked deltas.
</gallery>

== References ==
{{reflist}}

== Navigation ==
{{Navbox generated features}}

[[es:Delta]]
[[fr:Delta]]
[[ja:三角州]]
[[lzh:三角洲]]
[[ru:Дельта]]
[[zh:三角洲]]