diff --git a/tests/integration/study_data_blueprint/test_hydro_inflow_structure.py b/tests/integration/study_data_blueprint/test_hydro_inflow_structure.py
new file mode 100644
index 0000000000..0a8bb82ed6
--- /dev/null
+++ b/tests/integration/study_data_blueprint/test_hydro_inflow_structure.py
@@ -0,0 +1,155 @@
+from http import HTTPStatus
+from unittest.mock import ANY
+
+import pytest
+from starlette.testclient import TestClient
+
+
+@pytest.mark.unit_test
+class TestHydroInflowStructure:
+    """
+    Test the end points related to hydraulic inflow-structure.
+
+    Those tests use the "examples/studies/STA-mini.zip" Study,
+    which contains the following areas: ["de", "es", "fr", "it"].
+    """
+
+    def test_get_inflow_structure(
+        self,
+        client: TestClient,
+        user_access_token: str,
+        study_id: str,
+    ):
+        user_header = {"Authorization": f"Bearer {user_access_token}"}
+        area_id = "fr"
+
+        # ====================
+        # Use case : RAW study
+        # ====================
+
+        # Check that the default values are returned
+        res = client.get(
+            f"/v1/studies/{study_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+        actual = res.json()
+        expected = {"interMonthlyCorrelation": 0.5}
+        assert actual == expected
+
+        # Update the values
+        obj = {"interMonthlyCorrelation": 0.8}
+        res = client.put(
+            f"/v1/studies/{study_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+            json=obj,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+
+        # Check that the right values are returned
+        res = client.get(
+            f"/v1/studies/{study_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+        actual = res.json()
+        expected = {"interMonthlyCorrelation": 0.8}
+        assert actual == expected
+
+        # ========================
+        # Use case : Variant study
+        # ========================
+
+        # Create a managed study from the RAW study.
+        res = client.post(
+            f"/v1/studies/{study_id}/copy",
+            headers={"Authorization": f"Bearer {user_access_token}"},
+            params={"dest": "Clone", "with_outputs": False, "use_task": False},
+        )
+        res.raise_for_status()
+        managed_id = res.json()
+        assert managed_id is not None
+
+        # Create a variant from the managed study.
+        res = client.post(
+            f"/v1/studies/{managed_id}/variants",
+            headers={"Authorization": f"Bearer {user_access_token}"},
+            params={"name": "Variant"},
+        )
+        res.raise_for_status()
+        variant_id = res.json()
+        assert variant_id is not None
+
+        # Check that the return values match the RAW study values
+        res = client.get(
+            f"/v1/studies/{variant_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+        actual = res.json()
+        expected = {"interMonthlyCorrelation": 0.8}
+        assert actual == expected
+
+        # Update the values
+        obj = {"interMonthlyCorrelation": 0.9}
+        res = client.put(
+            f"/v1/studies/{variant_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+            json=obj,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+
+        # Check that the right values are returned
+        res = client.get(
+            f"/v1/studies/{variant_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+        actual = res.json()
+        expected = {"interMonthlyCorrelation": 0.9}
+        assert actual == expected
+
+        # Check the variant commands
+        res = client.get(
+            f"/v1/studies/{variant_id}/commands",
+            headers=user_header,
+        )
+        assert res.status_code == HTTPStatus.OK, res.json()
+        actual = res.json()
+        assert len(actual) == 2
+        expected = {
+            "id": ANY,
+            "action": "update_config",
+            "args": {
+                "target": "input/hydro/prepro/fr/prepro/prepro",
+                "data": {"intermonthly-correlation": 0.9},
+            },
+            "version": 1,
+        }
+        assert actual[1] == expected
+
+    def test_update_inflow_structure__invalid_values(
+        self,
+        client: TestClient,
+        user_access_token: str,
+        study_id: str,
+    ):
+        user_header = {"Authorization": f"Bearer {user_access_token}"}
+        area_id = "fr"
+
+        # Update the values with invalid values
+        obj = {"interMonthlyCorrelation": 1.1}
+        res = client.put(
+            f"/v1/studies/{study_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+            json=obj,
+        )
+        assert res.status_code == HTTPStatus.UNPROCESSABLE_ENTITY, res.json()
+
+        obj = {"interMonthlyCorrelation": -0.1}
+        res = client.put(
+            f"/v1/studies/{study_id}/areas/{area_id}/hydro/inflow-structure",
+            headers=user_header,
+            json=obj,
+        )
+        assert res.status_code == HTTPStatus.UNPROCESSABLE_ENTITY, res.json()