diff --git a/scripts/LHM_output/create_budgets_LHM_4.3.py b/scripts/LHM_output/create_budgets_LHM_4.3.py
new file mode 100644
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+++ b/scripts/LHM_output/create_budgets_LHM_4.3.py
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+import geopandas as gpd
+import imod
+import numpy as np
+import pandas as pd
+
+# create basin_id mask array from basin definitions
+# TODO: all node_id's need to be unique. Thats not the case right now!
+
+basin1 = gpd.read_file("ontvangen/hkv_basin_areas_aug-gpkg_2024-08-21_0741/Basin_areas_aug.gpkg")
+basin2 = gpd.read_file("ontvangen/export_alle_waterschappen_basin_areas.gpkg")
+basin2 = basin2.rename(columns={"basin_node_id": "node_id"})
+basins = pd.concat(
+    [basin1, basin2],
+    ignore_index=True,
+)
+array = imod.idf.open("model_uitvoer/bdgriv/bdgriv_sys1_20220101000000_l1.IDF").isel(time=0, layer=0, drop=True)
+mask = imod.prepare.rasterize(basins, column="node_id", like=array, fill=0, dtype=np.int32)
+
+# LHM-budget output naming convention
+
+# RIV-package
+# sys1: primary system
+# sys2: secondary system
+# sys3: tertiary system
+# sys4: main system; layer 1
+# sys5: main system; layer 2
+# sys6: boil's / well's
+
+# DRN-package
+# sys1: tube drainage
+# sys2: ditch dranage
+# sys3: OLF
+
+# For the Ribasim schematization we distinguish:
+#   - Primary system for all basins
+#   - Secondary system in basins other than the main river system
+
+# For drainage an infiltration input based on LHM-output budgets, we distubute the LHM-systems in the following matter:
+#  - Primary system   -> RIV-sys 1 + 4 + 5
+#  - Secondary system -> RIV-sys 2 + 3 + 6, DRN-sys 1 + 2 + 3
+
+# read riv-budgets, sum over yx, per basin
+# sum primairy systems
+budget_ar = imod.idf.open("model_uitvoer/bdgriv/bdgriv_sys1_*l*.IDF").sum(dim="layer").drop_vars(["dy", "dx"])
+budget = budget_ar.rename("primair").to_dataset()
+for sys in [4, 5]:
+    budget_ar = imod.idf.open(f"model_uitvoer/bdgriv/bdgriv_sys{sys}_*l*.IDF").sum(dim="layer").drop_vars(["dy", "dx"])
+    budget["primair"] += budget_ar
+
+# sum secondary systems
+budget["secondair"] = imod.idf.open("model_uitvoer/bdgriv/bdgriv_sys2_*l*.IDF").sum(dim="layer").drop_vars(["dy", "dx"])
+for sys, package in zip([3, 6, 1, 2, 3], ["riv", "riv", "drn", "drn", "drn"]):
+    budget_ar = (
+        imod.idf.open(f"model_uitvoer/bdg{package}/bdg{package}_sys{sys}_*l*.IDF")
+        .sum(dim="layer")
+        .drop_vars(["dy", "dx"])
+    )
+    budget["secondair"] += budget_ar
+
+# sum per node_id
+# negative budgets means drainage from the groundwatermodel
+budgets_per_node_id = budget.groupby(mask).sum(dim="stacked_y_x").to_dataframe().unstack(1)
+budgets_per_node_id.index.name = "node_id"
+budgets_per_node_id.to_csv("budgets_per_node_id.csv")