Lake Pontchartrain Toy Model:
This is a toy model that is used to walk through a Delft3D-Flexible Mesh application of the Lagrangian particle tracking model, dorado (Hariharan et al., 2020a). This Jupyter Notebook walkthough can be found on github (https://github.com/passaH2O/dorado) using the example: unstructured_grid_Delft3dFM.ipynb. This model was additionally used in the Jupyter Notebook walkthrough of spatial exposure time using the example: spatial_exposure_time_example_Delft3DFM.ipynb.

This model is for 30 days (April 15th, 2025 to May 16th, 2025). Accurate data was used for tidal and meteorological data. Tributary inputs are an approximate average of that time period and the diversion was set to be open during this time period; although no opening occurred during this time. This model was created for educational purposes only. A fully calibrated model can be found on HydroShare (Turner & Hiatt, 2025b), with the model creation process and applications of these codes outlined in "Water exposure time distributions controlled by freshwater releases in a semi-enclosed estuary (Turner & Hiatt, 2025b)".


Files:
D3DFM_example_required_files
boundaries_latlon.csv
celltype_edges.csv
celltype_roi.csv
FlowFM_map.nc
unstructured_model_Delft3DFM_run_01.txt
unstructured_model_Delft3DFM_variables_run_01.npz
WalkData_run_01.txt
run_01
	data
		exposure_times.txt
	figs
		ETD.png
		Exact_CETD.png
		Smooth_CETD.png

Lake_Pontchartrain_Toy_Model
	FlowFM
		input
		output


Cited:
Hariharan, J., Wright, K., & Passalacqua, P. (2020a). dorado: A Python package for simulating passive particle transport in shallow-water flows. Journal of Open Source Software, 5 (54), 2585. doi: 10.21105/joss.02585

Hariharan, J., Wright, K., & Passalacqua, P. (2020b). dorado (v2.5.3) [Published: GitHub repository]. Retrieved from https://github.com/passah2o/dorado

Turner, C. R., & Hiatt, M. (2025a). Water exposure time distributions controlled by freshwater releases in a semi-enclosed estuary. Water Resources Research, 61 (7), e2025WR040287

Turner, C. R. R., & Hiatt, M. (2025b). Water exposure time distributions controlled by freshwater releases in a semi-enclosed estuary published in water resources research wrr 2025 data [Dataset]. Hydroshare. doi:10.4211/hs.f1c83ff830bb47c5a7c84e6f5217ea5c