SWMM5 Emoji Laden LID Code Comments

· October 23, 2023

 Once upon a time in a virtual realm, a visionary coder named L. Rossman 🧙‍♂️ embarked on a quest to protect the environment through code. The tale revolves around an artifact known as the lidproc.c 📜, a module crafted by L. Rossman within the grand project of EPA SWMM5 🏰. Its purpose? To measure the hydrologic prowess of an LID (Low Impact Development) unit, a beacon of sustainable urban planning 🌱.

The chronicle 📔 unfolds:

Chapter 5.1.007 - "Evolving Techniques" 🌟:

  • The mages decided to use the power of Euler's integration on all LID types, except the mystical Vegetative Swale, which relied on successive approximations 🌿.
  • The LID layer flux spells were re-envisioned, enhancing their power to model flooded terrains 🌊.

Chapter 5.1.008 - "Enhancements and Discoveries" 🛠️:

  • In a brilliant move, the ancient constant MAX_STATE_VARS transformed into the more powerful MAX_LAYERS 🪄.
  • New LID techniques emerged: Porous Pavement LID acquired an optional soil layer, and the Rooftop Disconnection 🏠 technique was born.
  • Drains got their separate record-keeping 📊, and a magical indicator appeared, revealing which LIDs were currently brimming with water 💧.
  • Rossman tackled bugs and enhanced detailed reporting, ensuring that the Green Roof's drainage mat flawlessly channeled its flows 🌳.

Chapter 5.1.009 - "Amendments and Precision" 🔍:

  • A minor mishap occurred; a typo in the vegetative swale LID’s net flux rate was swiftly corrected.

Chapter 5.1.010 - "The Green-Ampt Revelation" 🌱:

  • A new and improved Green-Ampt technique surfaced, revolutionizing surface layer infiltration.

Chapter 5.1.011 - "Clarifications and Refinements" 🖋️:

  • Terms underwent transformation: STOR_INFIL morphed into STOR_EXFIL, bringing clarity to their roles.
  • Evaporation rates from subterranean realms became influenced by the surface's nature.
  • Underdrain flux rituals were tweaked, and the detailed results narration acquired a new voice.

Chapter 5.1.012 - "Modifications and Corrections" 📐:

  • The upper limits of several LID attributes, like soil layer percolation and surface infiltration, were adjusted, ensuring harmony within the realm.
  • A revelation occurred: the wasDry variable emerged as the savior against duplicated report lines.

Chapter 5.1.013 - "New Horizons" 🌅:

  • The LID world saw the dawn of open/closed head levels and the legendary multiplier v. head curve to master underdrain flows.
  • The power to regenerate pavement permeability at fixed epochs was unlocked.

Chapter 5.1.014 - "The Oversight" ⚙️:

  • A realization hit the grand coder: All LID layer moisture volumes must be set to zero before measuring the LID unit’s might.

Chapter 5.2.0 - "The Final Refinements" 🌟:

  • The Impervious Surface Fraction's influence on pavement permeability was acknowledged.
  • The units conversion for pavement depth in the detailed report file was perfected.

And thus, through continuous refinement and dedication, L. Rossman's lidproc.c became a cornerstone of sustainable urban planning, leaving a legacy for generations to come 🌍🌳. The end. 🎉📖🍃.