Legacy snow accumulation, removal, and melt calculations. More...

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "headers.h"

Include dependency graph for snow.c:

Enumerations
enum	SnowKeywords { SNOW_PLOWABLE , SNOW_IMPERV , SNOW_PERV , SNOW_REMOVAL }

Functions
int	snow_readMeltParams (char *tok[], int ntoks)
	Reads snowmelt parameters from a tokenized line of input data.

int	snow_createSnowpack (int subcatchIndex, int snowIndex)
	Allocate a subcatchment snowpack and associate its snowmelt parameters.

void	snow_initSnowpack (int subcatchIndex)
	Initialize a subcatchment's three snow surfaces and aggregate snow depth.

void	snow_initSnowmelt (int snowIndex)
	Set default values for a snowmelt parameter set.

void	snow_validateSnowmelt (int snowIndex)
	Check melt coefficient ordering and fractional snowpack parameters.

void	snow_getState (int i, int j, double x[])
	Copy one snow surface's five-component hotstart state.

void	snow_setState (int subcatchIndex, int subAreaIndex, double x[])
	Restore one snow surface's five-component hotstart state.

void	snow_setMeltCoeffs (int snowIndex, double season)
	Interpolate all three surfaces' seasonal melt coefficients.

void	snow_plowSnow (int subcatchIndex, double tStep)
	Accumulate snowfall and redistribute/plow snow above the trigger depth.

double	snow_getSnowMelt (int subcatchIndex, double rainfall, double snowfall, double tStep, double netPrecip[])
	Melt and route a snowpack and supply liquid precipitation to runoff areas.

double	snow_getSnowCover (int subcatchIndex)
	Sum stored snow and free-water volume over a subcatchment's non-LID area.

Detailed Description

Legacy snow accumulation, removal, and melt calculations.

Author: Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com (OpenSWMM maintenance and extensions)

Copyright: Copyright (c) 2026 Caleb Buahin. OpenSWMM contributions only; original EPA SWMM credits are retained.

License: Apache-2.0 for OpenSWMM contributions; original EPA SWMM provenance is retained.

Macro Definition Documentation

#define _CRT_SECURE_NO_DEPRECATE