diff --git a/src/configuration.cpp b/src/configuration.cpp
index 01b60b775..f3995aa59 100644
--- a/src/configuration.cpp
+++ b/src/configuration.cpp
@@ -106,6 +106,7 @@ void CConfiguration::InitializeDefaults()
    // m_dFinalWaterLevel = 0.0;
    m_bHasFinalWaterLevel = false;
 
+   m_strWaveInputMode = "fixed";
    m_strWaveHeightTimeSeries = "";
    m_strWaveStationDataFile = "";
    m_dDeepWaterWaveHeight = 1.0;
diff --git a/src/configuration.h b/src/configuration.h
index 30469722b..3dd831adf 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -100,6 +100,7 @@ class CConfiguration
    bool m_bHasFinalWaterLevel;
 
    // Waves
+   string m_strWaveInputMode;
    string m_strWaveHeightTimeSeries;
    string m_strWaveStationDataFile;
    double m_dDeepWaterWaveHeight;
@@ -354,6 +355,12 @@ class CConfiguration
    }
 
    // Wave height Data
+   // Wave height Data
+   void SetWaveInputMode(string const &str)
+   {
+      m_strWaveInputMode = str;
+   }
+
    void SetWaveHeightTimeSeries(string const &str)
    {
       m_strWaveHeightTimeSeries = str;
@@ -764,6 +771,10 @@ class CConfiguration
    {
       return m_bHasFinalWaterLevel;
    }
+   string GetWaveInputMode() const
+   {
+      return m_strWaveInputMode;
+   }
 
    // Wave data configuration getters (Cases 37-40)
    string GetWaveHeightTimeSeries() const
diff --git a/src/read_input.cpp b/src/read_input.cpp
index c35b53b76..3d0583154 100644
--- a/src/read_input.cpp
+++ b/src/read_input.cpp
@@ -4223,8 +4223,14 @@ bool CSimulation::bConfigureFromYamlFile(CConfiguration &config)
          if (gis.HasChild("raster_files"))
          {
             CYamlNode rasterFiles = gis.GetChild("raster_files");
-            if (rasterFiles.IsSequence())
+            if (rasterFiles.IsSequence()){
                config.SetRasterFiles(rasterFiles.GetStringSequence());
+            }
+            else {
+               //Allow the user to supply single entries not in list form
+               std::vector<std::string> tempVec{rasterFiles.GetValue()};
+               config.SetRasterFiles(tempVec);
+            }
          }
          if (gis.HasChild("vector_files"))
          {
@@ -4262,22 +4268,43 @@ bool CSimulation::bConfigureFromYamlFile(CConfiguration &config)
             config.SetFinalWaterLevel(
                hydro.GetChild("final_water_level").GetDoubleValue());
 
-         // Wave data configuration
-         if (hydro.HasChild("wave_height_time_series"))
-            config.SetWaveHeightTimeSeries(
-               hydro.GetChild("wave_height_time_series").GetValue());
-         if (hydro.HasChild("wave_height_shape_file"))
-            config.SetWaveStationDataFile(
-               hydro.GetChild("wave_height_shape_file").GetValue());
-         if (hydro.HasChild("wave_height"))
-            config.SetDeepWaterWaveHeight(
-               hydro.GetChild("wave_height").GetDoubleValue());
-         if (hydro.HasChild("wave_orientation"))
-            config.SetDeepWaterWaveOrientation(
-               hydro.GetChild("wave_orientation").GetDoubleValue());
-         if (hydro.HasChild("wave_period"))
-            config.SetWavePeriod(hydro.GetChild("wave_period").GetDoubleValue());
+         // Wave data configuration - read wave_input_mode first
+         string strWaveInputMode = "fixed";      // default
+         if (hydro.HasChild("wave_input_mode"))
+         {
+            strWaveInputMode = hydro.GetChild("wave_input_mode").GetValue();
+            config.SetWaveInputMode(strWaveInputMode);
+         }
 
+         // Conditionally read wave parameters based on input mode
+         if (strWaveInputMode == "time_series")
+         {
+            // Read time series wave inputs
+            if (hydro.HasChild("wave_height_time_series"))
+               config.SetWaveHeightTimeSeries(
+                  processFilePath(hydro.GetChild("wave_height_time_series").GetValue()));
+            if (hydro.HasChild("wave_height_shape_file"))
+               config.SetWaveStationDataFile(
+                  processFilePath(hydro.GetChild("wave_height_shape_file").GetValue()));
+         }
+         else if (strWaveInputMode == "fixed")
+         {
+            // Read fixed wave condition inputs
+            if (hydro.HasChild("wave_height"))
+               config.SetDeepWaterWaveHeight(
+                  hydro.GetChild("wave_height").GetDoubleValue());
+            if (hydro.HasChild("wave_orientation"))
+               config.SetDeepWaterWaveOrientation(
+                  hydro.GetChild("wave_orientation").GetDoubleValue());
+            if (hydro.HasChild("wave_period"))
+               config.SetWavePeriod(hydro.GetChild("wave_period").GetDoubleValue());
+         }
+         else
+      {
+            cerr << ERR << "Unknown wave_input_mode '" << strWaveInputMode
+               << "'. Must be 'fixed' or 'time_series'" << endl;
+            return false;
+         }
          //  Tide data configuration
          if (hydro.HasChild("tide_data_file"))
             config.SetTideDataFile(processFilePath(hydro.GetChild("tide_data_file").GetValue()));
@@ -5278,7 +5305,8 @@ bool CSimulation::bApplyConfiguration(CConfiguration const &config)
    {
       m_bHaveWaveStationData = true;
       m_strDeepWaterWaveStationsShapefile = config.GetWaveStationDataFile();
-      m_dAllCellsDeepWaterWaveHeight = config.GetDeepWaterWaveHeight();
+      // m_dAllCellsDeepWaterWaveHeight = config.GetDeepWaterWaveHeight();
+      m_strDeepWaterWavesInputFile = config.GetWaveHeightTimeSeries();
    }
 
    // Case 41: Tide data file (can be blank). This is the change (m) from still
@@ -5351,7 +5379,7 @@ bool CSimulation::bApplyConfiguration(CConfiguration const &config)
    m_dDeanProfileStartAboveSWL = config.GetBermHeight();
 
    // Case 59: Simulate cliff collapse?
-   m_dDeanProfileStartAboveSWL = config.GetCliffCollapse();
+   m_bDoCliffCollapse = config.GetCliffCollapse();
 
    // Case 60: Cliff resistance to erosion
    if (m_bHaveConsolidatedSediment && m_bDoCliffCollapse)