diff --git a/src/structure/structure_orifice_submerged_params.ts b/src/structure/structure_orifice_submerged_params.ts
index daa27e85f059166b851aaac191f261103bef5101..2dab21029b7696690bd54ef2880fd69421a48886 100644
--- a/src/structure/structure_orifice_submerged_params.ts
+++ b/src/structure/structure_orifice_submerged_params.ts
@@ -26,7 +26,7 @@ export class StructureOrificeSubmergedParams extends StructureParams {
         super(rQ, 100, rZ1, rZ2);
         this.S = new ParamDefinition(this, "S", ParamDomainValue.POS_NULL, rS);
         this.addParamDefinition(this.S);
-        this.CdO = new ParamDefinition(this, "Cd", ParamDomainValue.POS_NULL, rCd);
+        this.CdO = new ParamDefinition(this, "CdO", ParamDomainValue.POS_NULL, rCd);
         this.addParamDefinition(this.CdO);
         // hide params
         this.ZDV.visible = false;
diff --git a/src/structure/structure_triangular_trunc_weir_params.ts b/src/structure/structure_triangular_trunc_weir_params.ts
index c3e6cad7f9dd5b9a1a3414ea5e0534e7028c08be..d1cf95b8f2f74dbaeb016d69a91a1bf2d5662047 100644
--- a/src/structure/structure_triangular_trunc_weir_params.ts
+++ b/src/structure/structure_triangular_trunc_weir_params.ts
@@ -36,7 +36,7 @@ export class TriangularTruncStructureParams extends StructureParams {
         this.addParamDefinition(this.BT);
         this.ZT = new ParamDefinition(this, "ZT", ParamDomainValue.POS, rZT, ParamFamily.ELEVATIONS);
         this.addParamDefinition(this.ZT);
-        this.CdT = new ParamDefinition(this, "Cd", ParamDomainValue.POS, rCd);
+        this.CdT = new ParamDefinition(this, "CdT", ParamDomainValue.POS, rCd);
         this.addParamDefinition(this.CdT);
     }
 }
diff --git a/src/structure/structure_triangular_weir_params.ts b/src/structure/structure_triangular_weir_params.ts
index 260b406d725cd6ae21d12937f04ef73757df4857..8527a59f605c391deb7501220a54ce9c03dcf5b4 100644
--- a/src/structure/structure_triangular_weir_params.ts
+++ b/src/structure/structure_triangular_weir_params.ts
@@ -30,7 +30,7 @@ export class TriangularStructureParams extends StructureParams {
         super(rQ, rZDV, rZ1, rZ2, rW);
         this.alpha2 = new ParamDefinition(this, "alpha2", ParamDomainValue.POS, rAlpha2);
         this.addParamDefinition(this.alpha2);
-        this.CdT = new ParamDefinition(this, "Cd", ParamDomainValue.POS, rCd);
+        this.CdT = new ParamDefinition(this, "CdT", ParamDomainValue.POS, rCd);
         this.addParamDefinition(this.CdT);
     }
 }