So i finally found a waterfall + volcano 3x3 embark i can live with(been experimenting and using df hack to scan for volcano + waterfall for a week or so).
In the last batch I generated 89 maps starting at 10 with the following parameters which i think are ideal for waterfalls and volcanos on a medium region and finally got this on region 43(53).
Parameters with lots of volcanos(volcanism 3200variance, 16x16mesh 8,0,0,0,1), 128 starting rivers, 64 erosion cycles, 800 final rivers( to pour into eroded lower rivers) and other good parameters like fewer lakes/oceans for big long wide rivers and lots of mountains to embark next to.
Updated:to53
[WORLD_GEN]
[TITLE:MREVIL53]
[SEED:4sMae8SKW2a0YwEuuW60]
[HISTORY_SEED:gcCiyOSaoc4iW8sGOSko]
[NAME_SEED:X67H0dD8Yd4IiTV8pnXH]
[CREATURE_SEED:2w20OagIG8yMSSAiUGQA]
[DIM:129:129]
[EMBARK_POINTS:1504]
[END_YEAR:79]
[BEAST_END_YEAR:25:50]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:1]
[ELEVATION:25:400:3200:3200]
[RAINFALL:0:100:3200:3200]
[TEMPERATURE:15:55:1600:1600]
[DRAINAGE:0:100:800:800]
[VOLCANISM:0:100:3200:3200]
[SAVAGERY:0:100:3200:3200]
[ELEVATION_FREQUENCY:5:1:32:4:8:16]
[RAIN_FREQUENCY:5:2:2:3:4:4]
[DRAINAGE_FREQUENCY:4:1:1:1:3:5]
[TEMPERATURE_FREQUENCY:5:3:3:2:1:1]
[SAVAGERY_FREQUENCY:5:2:2:5:4:4]
[VOLCANISM_FREQUENCY:5:8:0:0:0:1]
[POLE:NORTH]
[MINERAL_SCARCITY:768]
[MEGABEAST_CAP:128]
[SEMIMEGABEAST_CAP:256]
[TITAN_NUMBER:64]
[TITAN_ATTACK_TRIGGER:80:0:100000]
[DEMON_NUMBER:52]
[NIGHT_TROLL_NUMBER:26]
[BOGEYMAN_NUMBER:26]
[VAMPIRE_NUMBER:26]
[WEREBEAST_NUMBER:26]
[SECRET_NUMBER:52]
[REGIONAL_INTERACTION_NUMBER:52]
[DISTURBANCE_INTERACTION_NUMBER:52]
[EVIL_CLOUD_NUMBER:26]
[EVIL_RAIN_NUMBER:26]
[GENERATE_DIVINE_MATERIALS:1]
[GOOD_SQ_COUNTS:128:256:384]
[EVIL_SQ_COUNTS:512:768:1024]
[PEAK_NUMBER_MIN:40]
[PARTIAL_OCEAN_EDGE_MIN:0]
[COMPLETE_OCEAN_EDGE_MIN:0]
[VOLCANO_MIN:200]
[REGION_COUNTS:SWAMP:512:0:0]
[REGION_COUNTS:DESERT:256:0:0]
[REGION_COUNTS:FOREST:1024:0:0]
[REGION_COUNTS:MOUNTAINS:2048:3:2]
[REGION_COUNTS:OCEAN:0:2:1]
[REGION_COUNTS:GLACIER:384:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:512:0:0]
[REGION_COUNTS:HILLS:512:0:0]
[EROSION_CYCLE_COUNT:64]
[RIVER_MINS:128:800]
[PERIODICALLY_ERODE_EXTREMES:0]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:5000]
[CAVERN_LAYER_COUNT:3]
[CAVERN_LAYER_OPENNESS_MIN:0]
[CAVERN_LAYER_OPENNESS_MAX:100]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:100]
[CAVERN_LAYER_WATER_MIN:0]
[CAVERN_LAYER_WATER_MAX:100]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:16]
[LEVELS_ABOVE_LAYER_1:8]
[LEVELS_ABOVE_LAYER_2:1]
[LEVELS_ABOVE_LAYER_3:1]
[LEVELS_ABOVE_LAYER_4:1]
[LEVELS_ABOVE_LAYER_5:2]
[LEVELS_AT_BOTTOM:1]
[CAVE_MIN_SIZE:8]
[CAVE_MAX_SIZE:64]
[MOUNTAIN_CAVE_MIN:128]
[NON_MOUNTAIN_CAVE_MIN:256]
[ALL_CAVES_VISIBLE:0]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:40]
[TOTAL_CIV_POPULATION:12800]
[SITE_CAP:1280]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:256:1024:1024]
[RAIN_RANGES:1024:1024:1024]
[DRAINAGE_RANGES:1024:1024:1024]
[SAVAGERY_RANGES:1024:1024:1024]
[VOLCANISM_RANGES:1024:1024:1024]
https://imgur.com/a/TvYPCYou can use above parameters to gen the same world in 44.07
The 3x3 embark is 2 biome shrubland, includes iron and flux and is calm + wilderness. (i think thats low and med savagery neutral)
I will now try some different seeds to try and get this with an evil region and or Necro tower and post the results later.
Edit: oops i'm drunk, i think 43 was a fail , and 53 was the one.. I'll fix this hang on. ----Edit Done. Parameters are as stated. -- But damned if I can't get a different evil region embark by changing history or creature seeds as i had previously thought ><;;