aquimodpy 1.1.0

Python wrapper for Aquimod 2

aquimodpy

A Python wrapper for the British Geological Survey's AquiMod 2, a lumped parameter groundwater model.

Features

• IDE Support: Full autocompletion and parameter validation in modern editors.
• Modular Design: Support for all Soil Zone (FAO, NSSS, SMAP), Unsaturated Zone (Weibull), and Saturated Zone (Q3K3S1, VKD, SA1D, etc.) components.
• Automated Configuration: Generates all required input files (Input.txt, Observations.txt, and component-specific parameter files) with correct Windows-style formatting for Wine compatibility.
• Simulation Modes: Full support for Evaluation, Monte Carlo calibration, and SCE-UA global optimization.
• Cross-Platform: Flexible execution support; specify your preferred command prefix (e.g., ["wine"], ["box86"]) for running the Windows binary on non-Windows systems.
• Data Integration: Seamless integration with Pandas for observation input and result parsing.

Installation

# Using pip
pip install aquimodpy

# Using uv
uv add aquimodpy

Documentation

• Latest release

Quick Start

import pandas as pd
from aquimodpy import Model, FAO, Weibull, Q3K3S1, Observations, EvaluationRunner

# 1. Initialize the model
model = Model(
    model_name="MySimulation",
    executable_path="~/Documents/AquiMod2/AquiMod2.exe",
    working_directory="./simulation_results",
    exec_prefix=["wine"],  # Use ["wine"] for Linux
    spinup_time=24, # Number of time steps in spinup period
)

# 2. Add components using named arguments
FAO(
    model,
    theta_fc=0.4,
    theta_wp=0.1,
    Z_r=1000,
    p=0.5,
    BFI=0.8
)

Weibull(
    model,
    k=2.0,
    lambda_=5.0 # Use lambda_ as 'lambda' is a Python keyword
)

Q3K3S1(
    model,
    dx=1000,
    K3=10,
    K2=5,
    K1=1,
    S=0.01,
    z3=50,
    z2=40,
    z1=30,
    alpha=1
)

# 3. Add observations and map column names
df = pd.read_csv("my_data.csv")
Observations(model, df, {
    "DATE": "date_col",
    "RAIN": "rainfall_mm",
    "PET": "pet_mm",
    "GWL": "gw_level_m"
})

# 4. Configure and run
model.set_runner(EvaluationRunner(model))
model.setup()
model.run()

# 5. Analyze results
results = model.get_results()
print(results['Sat'].head())

Calibration and Optimization

Monte Carlo Calibration

Provide [min, max] lists for parameters you wish to calibrate.

from aquimodpy import CalibrationRunner
model.set_runner(CalibrationRunner(model))
model.set_simulation_mode('m', n_runs=10000, threshold=0.5, variable='g')

# Calibrate Z_r and BFI, keep others fixed
FAO(
    model,
    theta_fc=0.35,
    theta_wp=0.1,
    Z_r=[500, 3000],
    p=0.5,
    BFI=[0.1, 0.99]
)

SCE-UA Optimization

model.set_simulation_mode('s', n_loops=100, n_complexes=50, variable='g')

License and Attribution

This library is licensed under the MIT License.

This project provides a wrapper for AquiMod 2, which is owned by the British Geological Survey (BGS) and is licensed under the Open Government Licence v3.0.

Please note that this library does not include the AquiMod 2 binary. You can download the AquiMod 2 software from the official BGS website. Users are responsible for obtaining the binary independently and complying with the terms of the Open Government Licence as specified by the BGS.