Index: /issm/trunk-jpl/test/NightlyRun/IdToName.m
===================================================================
--- /issm/trunk-jpl/test/NightlyRun/IdToName.m	(revision 14538)
+++ /issm/trunk-jpl/test/NightlyRun/IdToName.m	(revision 14539)
@@ -98,4 +98,5 @@
 	case 329, name='SquareSheetConstrainedSmbGradients3d';
 	case 330, name='SquareSheetConstrainedGia2d';
+	case 331, name='SquareSheetConstrainedHydrology';
 	case 401, name='SquareSheetShelfDiagM2d';
 	case 402, name='SquareSheetShelfDiagM3d';
Index: /issm/trunk-jpl/test/NightlyRun/test331.m
===================================================================
--- /issm/trunk-jpl/test/NightlyRun/test331.m	(revision 14539)
+++ /issm/trunk-jpl/test/NightlyRun/test331.m	(revision 14539)
@@ -0,0 +1,19 @@
+md=triangle(model(),'../Exp/Square.exp',150000.);
+md=setmask(md,'','');
+md=parameterize(md,'../Par/SquareSheetConstrained.par');
+md=setflowequation(md,'macayeal','all');
+md.cluster=generic('name',oshostname(),'np',3);
+md.initialization.watercolumn=10^-3*ones(md.mesh.numberofvertices,1);
+md.hydrology.spcwatercolumn=NaN*ones(md.mesh.numberofvertices,1);
+pos=find(md.mesh.y==0);
+md.hydrology.spcwatercolumn(pos)=2*10^-3;
+md=solve(md,HydrologySolutionEnum());
+
+%Fields and tolerances to track changes
+field_names     ={'HydrologyWaterVx1','HydrologyWaterVy','WaterColumn'};
+field_tolerances={1e-09,1e-09,1e-09};
+field_values={...
+	(md.results.HydrologySolution.HydrologyWaterVx),...
+	(md.results.HydrologySolution.HydrologyWaterVy),...
+	(md.results.HydrologySolution.Watercolumn),...
+	};