diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 5fdd88304..a7fd6a0f1 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.1.0"
+  ".": "1.1.5"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51bda31fa..0ccd274f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,47 @@
 # Changelog
 
+## [1.1.5](https://github.com/DataIntegrationGroup/OcotilloAPI/compare/v1.1.4...v1.1.5) (2026-07-07)
+
+
+### Bug Fixes
+
+* **deploy:** raise instance class to F4_1G to stop OOM instance churn ([ec012d6](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/ec012d60ff8b985e89c8a2ca4167b4f24cae8540))
+
+## [1.1.4](https://github.com/DataIntegrationGroup/OcotilloAPI/compare/v1.1.3...v1.1.4) (2026-07-07)
+
+
+### Bug Fixes
+
+* **ci:** deploy on inline workflow_call to CD (Production) ([8371f64](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/8371f646b08363a578d339d99da8ebf5863d21c9))
+* **ci:** deploy on inline workflow_call to CD (Production) ([1a11ee9](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/1a11ee9e5237d33ce7b9ee7f093dad5e023436c6))
+
+## [1.1.3](https://github.com/DataIntegrationGroup/OcotilloAPI/compare/v1.1.2...v1.1.3) (2026-07-06)
+
+
+### Bug Fixes
+
+* correct shapefile DBF schema and clean up temp dir on failure ([f63d9ce](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/f63d9ce2d28ba190b63628f40c61edee09ac1a5e))
+* drop yield_per in get_thing_features (incompatible with unique) ([fa727c4](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/fa727c42898e5d8791f248ff4dc0b5f43c7b3da2))
+* stop per-request OOM on /geospatial export endpoint ([d3a1358](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/d3a1358f54b9b6d02a6187d0004ba44b2b365ed0))
+* stop per-request OOM on /geospatial export endpoint ([2ed12b6](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/2ed12b602a080d98e2025fc0e4edefdc341412ba))
+* stream get_thing_features with yield_per instead of buffering ([877fff8](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/877fff833755034e9c0f1b67ed3d6c74a92d4084))
+
+## [1.1.2](https://github.com/DataIntegrationGroup/OcotilloAPI/compare/v1.1.1...v1.1.2) (2026-07-06)
+
+
+### Bug Fixes
+
+* **deploy:** align hotfix migration head with production DB (unblock v1.1.x deploy) ([1ee8a4b](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/1ee8a4b893027b851450d6ed98c811aea283c365))
+* **deploy:** align hotfix migration head with production DB + fix release tag passthrough ([790377f](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/790377f53e57c9f7671d45efbcab617189f2af36))
+
+## [1.1.1](https://github.com/DataIntegrationGroup/OcotilloAPI/compare/v1.1.0...v1.1.1) (2026-07-06)
+
+
+### Bug Fixes
+
+* **deploy:** prevent App Engine request starvation under burst load ([fec7dbd](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/fec7dbd2e0f59d6ce1c3319cda9fded5c6051eb8))
+* **deploy:** prevent App Engine request starvation under burst load ([385c974](https://github.com/DataIntegrationGroup/OcotilloAPI/commit/385c9743185520b82034f0b1549d51c57781f9e9))
+
 ## [1.1.0](https://github.com/DataIntegrationGroup/OcotilloAPI/compare/v1.0.0...v1.1.0) (2026-06-08)
 
 
diff --git a/api/geospatial.py b/api/geospatial.py
index 082979f8a..2d649d334 100644
--- a/api/geospatial.py
+++ b/api/geospatial.py
@@ -14,16 +14,21 @@
 # limitations under the License.
 # ===============================================================================
 import json
+import os
+import shutil
+import tempfile
 from typing import Annotated, List
 
 from fastapi import APIRouter, Query, HTTPException
 from fastapi.responses import FileResponse
 from geoalchemy2.shape import to_shape
 from shapely.io import to_geojson
-from starlette.responses import JSONResponse
+from starlette.background import BackgroundTask
+from starlette.responses import StreamingResponse
 
 from core.dependencies import session_dependency, viewer_dependency
 from db import Group
+from db.engine import session_ctx
 from schemas.thing import FeatureCollectionResponse
 from services.geospatial_helper import create_shapefile, get_thing_features
 from services.query_helper import simple_get_by_id
@@ -54,8 +59,7 @@ def get_geospatial(
     """
 
     if format_ == "geojson":
-        content = get_feature_collection(session, thing_type, group)
-        return JSONResponse(content=content, media_type="application/geo+json")
+        return get_feature_collection(thing_type, group)
     else:
         return get_location_shapefile(session, thing_type, group)
 
@@ -89,17 +93,17 @@ def get_project_area(
 
 
 def get_feature_collection(
-    session: session_dependency,
     thing_type: List[str] | None = None,
     group: Annotated[
         str | int, Query(title="group", description="group", alias="group")
     ] = None,
-) -> FeatureCollectionResponse:
-    """
-    Endpoint to retrieve a GeoJSON FeatureCollection.
+) -> StreamingResponse:
     """
+    Retrieve a GeoJSON FeatureCollection.
 
-    things = get_thing_features(session, thing_type, group)
+    Streamed feature-by-feature so the entire result set is never buffered in
+    memory at once.
+    """
 
     def make_feature_dict(thing, geometry, elevation, *other):
         geometry = json.loads(geometry)
@@ -115,12 +119,18 @@ def make_feature_dict(thing, geometry, elevation, *other):
             "geometry": geometry,
         }
 
-    features = [make_feature_dict(*item) for item in things]
+    def generate():
+        # The request-scoped session is closed before this response body
+        # streams, so open a dedicated session scoped to the stream.
+        with session_ctx() as stream_session:
+            yield '{"type": "FeatureCollection", "features": ['
+            first = True
+            for item in get_thing_features(stream_session, thing_type, group):
+                yield ("" if first else ",") + json.dumps(make_feature_dict(*item))
+                first = False
+            yield "]}"
 
-    return {
-        "type": "FeatureCollection",
-        "features": features,
-    }
+    return StreamingResponse(generate(), media_type="application/geo+json")
 
 
 def get_location_shapefile(
@@ -133,16 +143,32 @@ def get_location_shapefile(
     """
 
     things = get_thing_features(session, thing_type, group)
-    create_shapefile(things, "things.shp")
 
-    # Return the shapefile as a zip (optional: zip the .shp, .shx, .dbf files)
-    import zipfile
+    # Write into a temp dir: the App Engine app directory is read-only, and /tmp
+    # is RAM-backed, so build here and clean up after the response is sent.
+    tmpdir = tempfile.mkdtemp()
+    try:
+        shp_path = os.path.join(tmpdir, "things.shp")
+        zip_path = os.path.join(tmpdir, "things.zip")
+
+        create_shapefile(things, shp_path)
+
+        import zipfile
+
+        with zipfile.ZipFile(zip_path, "w") as zf:
+            for ext in ["shp", "shx", "dbf"]:
+                zf.write(os.path.join(tmpdir, f"things.{ext}"), arcname=f"things.{ext}")
+    except Exception:
+        # BackgroundTask only runs on a successful response, so clean up here to
+        # avoid leaking temp dirs when generation fails.
+        shutil.rmtree(tmpdir, ignore_errors=True)
+        raise
 
-    with zipfile.ZipFile("things.zip", "w") as zf:
-        for ext in ["shp", "shx", "dbf"]:
-            zf.write(f"things.{ext}")
     return FileResponse(
-        "things.zip", media_type="application/zip", filename="things.zip"
+        zip_path,
+        media_type="application/zip",
+        filename="things.zip",
+        background=BackgroundTask(shutil.rmtree, tmpdir, ignore_errors=True),
     )
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 11ff4d3f7..e4b6aba75 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "OcotilloAPI"
-version = "1.1.0"
+version = "1.1.5"
 description = "FastAPI backend and CLI for managing Ocotillo groundwater locations, wells, assets, and bulk water-level data transfers."
 readme = "README.md"
 requires-python = ">=3.13"
diff --git a/services/geospatial_helper.py b/services/geospatial_helper.py
index fc1118aa8..fb8777178 100644
--- a/services/geospatial_helper.py
+++ b/services/geospatial_helper.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ===============================================================================
+from typing import Iterator
+
 import shapefile
 from geoalchemy2.functions import ST_GeomFromText, ST_Within, ST_AsGeoJSON
 from geoalchemy2.shape import to_shape
@@ -31,7 +33,7 @@
 
 def get_thing_features(
     session, thing_type: list | str | None, group: str | int | None
-) -> list:
+) -> Iterator:
     # sql = (
     #     select(Thing, ST_AsGeoJSON(Location.point).label("geojson"))
     #     .join(LocationThingAssociation, Thing.id == LocationThingAssociation.thing_id)
@@ -87,15 +89,29 @@ def get_thing_features(
         else:
             sql = sql.where(Group.id == group)
 
-    # unique needs to be invoked to prevent duplicates from eager loading
-    return session.execute(sql).unique().all()
+    # Stream the result with yield_per so the whole table is never buffered in
+    # memory at once. Thing has no eager-loaded collections (all relationships
+    # are lazy), so unique() is unnecessary -- and unique() is incompatible with
+    # yield_per anyway. Dedup defensively by id with a bounded set of ints in
+    # case the joins ever produce duplicate rows.
+    seen = set()
+    result = session.execute(sql.execution_options(yield_per=1000))
+    for row in result:
+        thing_id = row[0].id
+        if thing_id in seen:
+            continue
+        seen.add(thing_id)
+        yield row
 
 
 def create_shapefile(things: list, filename: str = "things.shp") -> None:
     # Create a point shapefile
     with shapefile.Writer(filename, shapeType=shapefile.POINT) as shp:
-        shp.field("id", "L")
+        # Field schema must match the values written in shp.record() below:
+        # id (numeric), name (char), elevation (numeric).
+        shp.field("id", "N")
         shp.field("name", "C")
+        shp.field("elevation", "N", decimal=3)
 
         for thing, point, elevation in things:
             # Assume loc.point is WKT or a Shapely geometry or GeoJSON
diff --git a/uv.lock b/uv.lock
index 791d52f03..9d74208ac 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1479,7 +1479,7 @@ wheels = [
 
 [[package]]
 name = "ocotilloapi"
-version = "1.1.0"
+version = "1.1.5"
 source = { editable = "." }
 dependencies = [
     { name = "aiofiles" },