This simple tweak mod can enrich the vanilla snow layer's behavior.

With this mod you can:

Place snow and fence/wall/tallgrass in the same block!
The snow layer will fall like sand. If it touches the water source, it will become ice!
The snow layer will accumulate during a snowstorm!
The snow layer will have a thinner bounding box like Bedrock edition!
Reduce fall damage on snow!
Make snow always replaceable by other blocks!
Make snow never melt (disabled by default)
And more!

All features can be disabled in the config.

<=1.20.1: To work with Sodium, you need to install Indium

Configuration

Common

snowGravity: Snow layer falls like sand. [Performance impact: low]
snowMakingIce: Falling snow becomes ice when it touches water. [Performance impact: none]
snowAlwaysReplaceable: Snow layer can always be placed by other blocks, as long as it is not full. [Performance impact: none]
thinnerBoundingBox: Shrink the collision box of the snow layer. [Performance impact: none]
snowNeverMelt: Snow layer never melts. [Performance impact: none]
snowSpawnMaxLightLevel: Maximum light level for snow to spawn. [Performance impact: none]
snowPersistMaxLightLevel: Maximum light level for snow to not melt. [Performance impact: none]
snowReduceFallDamage: Reduce fall damage when landing on snow, depending on the snow layers. [Performance impact: none]
sustainGrassIfLayerMoreThanOne: Prevents grass block from turning into dirt when snow layer is more than 1. [Performance impact: none]
sneakSnowball: Sneak+use on snow layer to obtain snowball, consuming one layer of snow. [Performance impact: none]
fancySnowOnUpperSlab: Snow layer on upper slab will render snow overlay on the side of the slab. [Performance impact: low]
mobSpawningMaxLayers: Maximum layers of snow for mobs to spawn. [Performance impact: none]
snow-cover.placeSnowOnBlock: Snow can be placed on some blocks to make them snow-covered. [Performance impact: low]
snow-cover.placeNaturally: Snow can be placed on some blocks not only by player, but also from snowfall or world generation. [Performance impact: low]
snow-cover.replaceWorldgenFeature: Replace the vanilla world generation feature to also generate snow-covered blocks. [Performance impact: low]
snow-cover.retainOriginalBlocks: If you want to uninstall this mod, you can restore snow-covered blocks to their original blocks via random ticking. [Performance impact: low]
accumulation.accumulatesDuringSnowfall: Snow layer accumulates during snowfall. [Performance impact: medium]
accumulation.accumulatesDuringSnowstorm: Snow layer accumulates during thundering. [Performance impact: medium]
accumulation.maxLayers: Maximum layers of snow that can accumulate. 9 is unlimited. [Performance impact: low]
accumulation.snowAndIceMeltInWarmBiomes: Snow and ice will melt in warm biomes. [Performance impact: low]
accumulation.naturalMelting: Snow melts with time if its layer is more than 1. [Performance impact: medium]
integration.accumulationWinterOnly: If you have mod that adds seasons, snow accumulation only happens in winter. [Performance impact: none]

Client

particleThroughLeaves: Generates snowflake particles under snow that is above leaves. [Performance impact: low]
snowVariants: Some snow-covered foliage will be rendered differently. [Performance impact: low]

Discord

Snow! Real Magic! ⛄ (Fabric)