diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..b737a71
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,37 @@
+environment:
+
+  matrix:
+
+    - PYTHON: "3.8"
+      MINICONDA: C:\\Miniconda38-x64
+
+    - PYTHON: "3.7"
+      MINICONDA: C:\\Miniconda37-x64
+
+    - PYTHON: "3.6"
+      MINICONDA: C:\\Miniconda36-x64
+
+platform:
+  - x64
+
+os: Visual Studio 2019
+
+init:
+  - "ECHO %PYTHON% %HOME% %PLATFORM%"
+  - "ECHO %APPVEYOR_REPO_BRANCH%"
+
+install:
+  - cmd: call %MINICONDA%\Scripts\activate.bat
+  - cmd: conda install mamba -c conda-forge --yes
+  - cmd: mamba config --set always_yes yes
+  - cmd: set PYTHONUNBUFFERED=1
+  - cmd: mamba install --file=requirements-library.txt -c conda-forge --yes
+  - cmd: mamba list
+  - cmd: python --version
+
+build: false
+
+test_script:
+  - cmd: mamba install --file=requirements-testing.txt -c conda-forge --yes
+  - cmd: pip install -e .
+  - cmd: bmi-test pymt_hydrotrend.bmi:Hydrotrend -vvv