diff --git a/docs/hooks/hook_civicrm_alterLocationMergeData.md b/docs/hooks/hook_civicrm_alterLocationMergeData.md
new file mode 100644
index 0000000000000000000000000000000000000000..4d964608b6f90ec16bbb5b0684cc9bfb6baaad96
--- /dev/null
+++ b/docs/hooks/hook_civicrm_alterLocationMergeData.md
@@ -0,0 +1,44 @@
+# hook_civicrm_alterLocationMergeData
+
+## Summary
+
+This hook allows you to alter the location information that will be moved from
+the duplicate contact to the master contact.
+
+## Availability
+
+This hook was first available in CiviCRM 4.7.10.
+
+## Definition
+
+```php
+hook_civicrm_alterLocationMergeData(&$blocksDAO, $mainId, $otherId, $migrationInfo)
+```
+
+## Parameters
+
+   * array $blocksDAO: Array of location DAO to be saved. These are arrays in 2 keys 'update' & 'delete'.
+   * int $mainId: Contact ID of the contact that survives the merge.
+   * int $otherId: Contact ID of the contact that will be absorbed and deleted.
+   * array $migrationInfo: Calculated migration info.
+
+## Details
+
+The $blocksDAO contains a list of 'location blocks' (eg: emails, phones,
+addresses) which will be updated or deleted as part of the merge. This is
+formatted like:
+
+```php
+[
+  email
+    delete
+      id => object
+    update
+      id => object
+  address
+    delete
+      id => object
+    update
+      id => object
+]
+```
diff --git a/mkdocs.yml b/mkdocs.yml
index f8ca7538b6c6417a26834f57c0eb89f1c1400074..30ad57d6a7f21fb35ae30bda7efc3fec23ce842b 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -77,6 +77,7 @@ pages:
     - hook_civicrm_custom: hooks/hook_civicrm_custom.md
     - hook_civicrm_managed: hooks/hook_civicrm_managed.md
     - hook_civicrm_merge: hooks/hook_civicrm_merge.md
+    - hook_civicrm_alterLocationMergeData: hooks/hook_civicrm_alterLocationMergeData.md
     - hook_civicrm_post: hooks/hook_civicrm_post.md
     - hook_civicrm_postSave_table_name: hooks/hook_civicrm_postSave_table_name.md
     - hook_civicrm_pre: hooks/hook_civicrm_pre.md
diff --git a/redirects/wiki-crmdoc.txt b/redirects/wiki-crmdoc.txt
index 92e332db60f2be351029b4bd425de4d0354ede9f..4639376a63f3aa53a17ab9b244eb09048fc0994a 100644
--- a/redirects/wiki-crmdoc.txt
+++ b/redirects/wiki-crmdoc.txt
@@ -11,6 +11,7 @@ hook_civicrm_copy hooks/hook_civicrm_copy
 hook_civicrm_custom hooks/hook_civicrm_custom
 hook_civicrm_managed hooks/hook_civicrm_managed
 hook_civicrm_merge hooks/hook_civicrm_merge
+hook_civicrm_alterLocationMergeData hooks/hook_civicrm_alterLocationMergeData
 hook_civicrm_post hooks/hook_civicrm_post
 hook_civicrm_pre hooks/hook_civicrm_pre
 hook_civicrm_trigger_info hooks/hook_civicrm_triggerInfo