diff --git a/.gitignore b/.gitignore
index b6e47617..3a6c1aee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -127,3 +127,6 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# Pysheds cache
+cache/
diff --git a/swmmanywhere/graph_utilities.py b/swmmanywhere/graph_utilities.py
index aa755a0d..e3de2af2 100644
--- a/swmmanywhere/graph_utilities.py
+++ b/swmmanywhere/graph_utilities.py
@@ -4,6 +4,7 @@
 @author: Barney
 """
 import json
+import os
 import tempfile
 from abc import ABC, abstractmethod
 from collections import defaultdict
@@ -176,9 +177,12 @@ def iterate_graphfcns(G: nx.Graph,
     not_exists = [g for g in graphfcn_list if g not in graphfcns]
     if not_exists:
         raise ValueError(f"Graphfcns are not registered:\n{', '.join(not_exists)}")
+    verbose = os.getenv("SWMMANYWHERE_VERBOSE", "false").lower() == "true"
     for function in graphfcn_list:
         G = graphfcns[function](G, addresses = addresses, **params)
         logger.info(f"graphfcn: {function} completed.")
+        if verbose:
+            save_graph(G, addresses.model / f"{function}_graph.json")
     return G
 
 @register_graphfcn
diff --git a/swmmanywhere/swmmanywhere.py b/swmmanywhere/swmmanywhere.py
index 2da47e1e..fe1cef0e 100644
--- a/swmmanywhere/swmmanywhere.py
+++ b/swmmanywhere/swmmanywhere.py
@@ -3,6 +3,7 @@
 
 @author: Barney
 """
+import os
 from pathlib import Path
 
 import geopandas as gpd
@@ -80,7 +81,10 @@ def swmmanywhere(config: dict):
     # Run the model
     synthetic_results = run(addresses.inp, 
                             **config['run_settings'])
-    
+    if os.getenv("SWMMANYWHERE_VERBOSE", "false").lower() == "true":
+        synthetic_results.to_parquet(addresses.model /\
+                                      f'results.{addresses.extension}')
+
     # Get the real results
     if config['real']['results']:
         # TODO.. bit messy
@@ -88,9 +92,12 @@ def swmmanywhere(config: dict):
     elif config['real']['inp']:
         real_results = run(config['real']['inp'],
                            **config['run_settings'])
+        if os.getenv("SWMMANYWHERE_VERBOSE", "false").lower() == "true":
+            real_results.to_parquet(config['real']['inp'].parent /\
+                                     f'real_results.{addresses.extension}')
     else:
         logger.info("No real network provided, returning SWMM .inp file.")
-        return addresses.inp
+        return addresses.inp, None
     
     # Iterate the metrics
     metrics = iterate_metrics(synthetic_results,
@@ -102,7 +109,7 @@ def swmmanywhere(config: dict):
                               config['metric_list'],
                               parameters['metric_evaluation'])
 
-    return metrics
+    return addresses.inp, metrics
 
 def check_top_level_paths(config: dict):
     """Check the top level paths in the config.
diff --git a/tests/test_swmmanywhere.py b/tests/test_swmmanywhere.py
index aab18b5b..3eca430f 100644
--- a/tests/test_swmmanywhere.py
+++ b/tests/test_swmmanywhere.py
@@ -1,4 +1,5 @@
 """Tests for the main module."""
+import os
 import tempfile
 from pathlib import Path
 
@@ -82,7 +83,21 @@ def test_swmmanywhere():
         config['real']['graph'] = model_dir / 'graph.parquet'
 
         # Run swmmanywhere
-        swmmanywhere.swmmanywhere(config)
+        os.environ["SWMMANYWHERE_VERBOSE"] = "true"
+        inp, metrics = swmmanywhere.swmmanywhere(config)
+
+        # Check metrics were calculated
+        assert metrics is not None
+        for key, val in metrics.items():
+            assert isinstance(val, float)
+        
+        assert set(metrics.keys()) == set(config['metric_list'])
+
+        # Check results were saved
+        assert (inp.parent / f'{config["graphfcn_list"][-1]}_graph.json').exists()
+        assert inp.exists()
+        assert (inp.parent / 'results.parquet').exists()
+        assert (config['real']['inp'].parent / 'real_results.parquet').exists()
 
 def test_load_config_file_validation():
     """Test the file validation of the config."""