MODFLOW-ORG · emorway-usgs · Nov 20, 2025 · Aug 22, 2025 · Mar 6, 2025 · Mar 13, 2025
diff --git a/autotest/test_gwe_sfe_abc00.py b/autotest/test_gwe_sfe_abc00.py
diff --git a/autotest/test_gwe_sfe_abc02.py b/autotest/test_gwe_sfe_abc02.py
diff --git a/autotest/test_gwe_sfe_lhf00.py b/autotest/test_gwe_sfe_lhf00.py
diff --git a/autotest/test_gwe_sfe_lwr00.py b/autotest/test_gwe_sfe_lwr00.py
diff --git a/autotest/test_gwe_sfe_shf00.py b/autotest/test_gwe_sfe_shf00.py
diff --git a/autotest/test_gwe_sfe_shf01.py b/autotest/test_gwe_sfe_shf01.py
diff --git a/autotest/test_gwe_sfe_swr00.py b/autotest/test_gwe_sfe_swr00.py
diff --git a/doc/Common/gwe-sfeobs.tex b/doc/Common/gwe-sfeobs.tex
@@ -14,4 +14,6 @@
 SFE & runoff & rno or boundname & -- & Runoff rate applied to a reach or group of reaches multiplied by the runoff temperature. \\
 SFE & ext-inflow & rno or boundname & -- & Energy inflow into a reach or group of reaches calculated as the external inflow rate multiplied by the inflow temperature. \\
 SFE & ext-outflow & rno or boundname & -- & External outflow from a reach or group of reaches to an external boundary. If boundname is not specified for ID, then the external outflow from a specific reach is observed. In this case, ID is the reach rno. \\
-SFE & strmbd-cond & rno or boundname & -- & Amount of heat conductively exchanged with the streambed material. 
+SFE & strmbd-cond & rno or boundname & -- & Amount of heat conductively exchanged with the streambed material. \\
+SFE & shf & rno or boundname & -- & Amount of sensible heat exchanged with the atmosphere. \\
+SFE & swr & rno or boundname & -- & Amount of shortwave radiation on stream reach.
diff --git a/doc/mf6io/gwe/abc.tex b/doc/mf6io/gwe/abc.tex
@@ -0,0 +1,21 @@
+Input to the Atmospheric Boundary Condition (ABC) Package is read from the file that is specified in the ABC6 record of the OPTIONS block in the SFE package.
+
+\vspace{5mm}
+\subsubsection{Structure of Blocks}
+\vspace{5mm}
+
+\noindent \textit{FOR EACH SIMULATION}
+\lstinputlisting[style=blockdefinition]{./mf6ivar/tex/utl-abc-options.dat}
+\vspace{5mm}
+\noindent \textit{FOR ANY STRESS PERIOD}
+\lstinputlisting[style=blockdefinition]{./mf6ivar/tex/utl-abc-period.dat}
+
+\vspace{5mm}
+\subsubsection{Explanation of Variables}
+\begin{description}
+\input{./mf6ivar/tex/utl-abc-desc.tex}
+\end{description}
+
+\vspace{5mm}
+\subsubsection{Example Input File}
+\lstinputlisting[style=inputfile]{./mf6ivar/examples/utl-abc-example.dat}
diff --git a/doc/mf6io/gwe/gwe.tex b/doc/mf6io/gwe/gwe.tex
@@ -127,6 +127,10 @@ \subsection{Energy Source Loading (ESL) Package}
 \subsection{Streamflow Energy Transport (SFE) Package}
 \input{gwe/sfe}
 
+\newpage
+\subsection{Atmospheric Boundary Conditions (ABC) Package}
+\input{gwe/abc}
+
 \newpage
 \subsection{Lake Energy Transport (LKE) Package}
 \input{gwe/lke}

diff --git a/doc/mf6io/gwe/shf.tex b/doc/mf6io/gwe/shf.tex
@@ -0,0 +1,21 @@
+Input to the Sensible Heat Flux (SHF) Package is read from the file that is specified in the SHF6 record of the OPTIONS block in the SFE package.
+
+\vspace{5mm}
+\subsubsection{Structure of Blocks}
+\vspace{5mm}
+
+\noindent \textit{FOR EACH SIMULATION}
+\lstinputlisting[style=blockdefinition]{./mf6ivar/tex/utl-shf-options.dat}
+\vspace{5mm}
+\noindent \textit{FOR ANY STRESS PERIOD}
+\lstinputlisting[style=blockdefinition]{./mf6ivar/tex/utl-shf-period.dat}
+
+\vspace{5mm}
+\subsubsection{Explanation of Variables}
+\begin{description}
+\input{./mf6ivar/tex/utl-shf-desc.tex}
+\end{description}
+
+\vspace{5mm}
+\subsubsection{Example Input File}
+\lstinputlisting[style=inputfile]{./mf6ivar/examples/utl-shf-example.dat}
diff --git a/doc/mf6io/gwe/swr.tex b/doc/mf6io/gwe/swr.tex
@@ -0,0 +1,21 @@
+Input to the Shortwave Radiation (SWR) Package is read from the file that is specified in the SWR6 record of the OPTIONS block in the SFE package.
+
+\vspace{5mm}
+\subsubsection{Structure of Blocks}
+\vspace{5mm}
+
+\noindent \textit{FOR EACH SIMULATION}
+\lstinputlisting[style=blockdefinition]{./mf6ivar/tex/utl-swr-options.dat}
+\vspace{5mm}
+\noindent \textit{FOR ANY STRESS PERIOD}
+\lstinputlisting[style=blockdefinition]{./mf6ivar/tex/utl-swr-period.dat}
+
+\vspace{5mm}
+\subsubsection{Explanation of Variables}
+\begin{description}
+\input{./mf6ivar/tex/utl-swr-desc.tex}
+\end{description}
+
+\vspace{5mm}
+\subsubsection{Example Input File}
+\lstinputlisting[style=inputfile]{./mf6ivar/examples/utl-swr-example.dat}
diff --git a/doc/mf6io/mf6ivar/dfn/gwe-sfe.dfn b/doc/mf6io/mf6ivar/dfn/gwe-sfe.dfn
@@ -254,6 +254,37 @@ optional false
 longname obs6 input filename
 description REPLACE obs6_filename {'{#1}': 'SFE'}
 
+block options
+name abc_filerecord
+type record abc6 filein abc6_filename
+shape
+reader urword
+tagged true
+optional true
+longname
+description
+
+block options
+name abc6
+type keyword
+shape
+in_record true
+reader urword
+tagged true
+optional false
+longname abc keyword
+description keyword to specify that record corresponds to the atmospheric boundary condition (ABC) file.  The behavior of the ABC utility and a description of the input file is provided separately.
+
+block options
+name abc6_filename
+type string
+preserve_case true
+in_record true
+reader urword
+optional false
+tagged false
+longname file name of ABC information
+description defines a sensible heat flux (ABC) input file.  Records in the ABC file are used to calculate the flux of thermal energy in or out of a stream reach resulting from sensible heat exchange.
 
 # --------------------- gwe sfe packagedata ---------------------