diff --git a/api/well_inventory.py b/api/well_inventory.py
index 4f7769609..1d19ae581 100644
--- a/api/well_inventory.py
+++ b/api/well_inventory.py
@@ -487,12 +487,29 @@ def _add_csv_row(session: Session, group: Group, model: WellInventoryRow, user)
     # --------------------
 
     # add Thing
+    """
+    Developer's note
+
+    Laila said that the depth source is almost always the source for the historic depth to water.
+    She indicated that it would be acceptable to use the depth source for the historic depth to water source.
+    """
+    if model.depth_source:
+        historic_depth_to_water_source = model.depth_source.lower()
+    else:
+        historic_depth_to_water_source = "unknown"
+
+    if model.historic_depth_to_water_ft is not None:
+        historic_depth_note = f"historic depth to water: {model.historic_depth_to_water_ft} ft - source: {historic_depth_to_water_source}."
+    else:
+        historic_depth_note = None
+
     well_notes = []
     for note_content, note_type in (
         (model.specific_location_of_well, "Access"),
         (model.special_requests, "General"),
         (model.well_measuring_notes, "Sampling Procedure"),
         (model.sampling_scenario_notes, "Sampling Procedure"),
+        (historic_depth_note, "Historic"),
     ):
         if note_content is not None:
             well_notes.append({"content": note_content, "note_type": note_type})
diff --git a/schemas/well_inventory.py b/schemas/well_inventory.py
index aa4079664..e718de96f 100644
--- a/schemas/well_inventory.py
+++ b/schemas/well_inventory.py
@@ -222,7 +222,7 @@ class WellInventoryRow(BaseModel):
     date_drilled: OptionalDateTime = None
     completion_source: Optional[str] = None
     total_well_depth_ft: OptionalFloat = None
-    historic_depth_to_water_ft: OptionalFloat = None  # TODO: needs a home
+    historic_depth_to_water_ft: OptionalFloat = None
     depth_source: Optional[str] = None
     well_pump_type: Optional[str] = None
     well_pump_depth_ft: OptionalFloat = None