diff --git a/var/spack/repos/builtin/packages/py-anuga/package.py b/var/spack/repos/builtin/packages/py-anuga/package.py
new file mode 100644
index 0000000000..931a45160d
--- /dev/null
+++ b/var/spack/repos/builtin/packages/py-anuga/package.py
@@ -0,0 +1,32 @@
+# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class PyAnuga(PythonPackage):
+    """ANUGA (pronounced "AHnooGAH") is open-source software for the simulation
+    of the shallow water equation, in particular it can be used to model
+    tsunamis and floods."""
+
+    homepage = "https://github.com/GeoscienceAustralia/anuga_core"
+    url      = "https://github.com/GeoscienceAustralia/anuga_core/archive/2.1.tar.gz"
+
+    version('2.1', sha256='0e56c4a7d55570d7b2c36fa9b53ee4e7b85f62be0b4c03ad8ab5f51464321d2f')
+
+    variant('mpi', default=True, description='Install anuga_parallel')
+
+    # At present AnuGA has only been run and tested using python 2.x.
+    # We recommend python 2.7.
+    depends_on('python@2.6:2.8', type=('build', 'run'))
+    depends_on('py-setuptools@:44', type='build')
+    depends_on('py-numpy@:1.16', type=('build', 'run'))
+    depends_on('py-netcdf4', type=('build', 'run'))
+    depends_on('py-matplotlib@:2', type=('build', 'run'))
+    depends_on('gdal@:3.2+python', type=('build', 'run'))
+    depends_on('py-pypar', when='+mpi', type=('build', 'run'))
+
+    # https://github.com/GeoscienceAustralia/anuga_core/issues/247
+    conflicts('%apple-clang@12:')