angles appearances city plaza concrete contemporary contrast contrasting cool cooling flow flowing levels light low modern movement pool pools reflections ripples rippling shade shadows surface water water feature waterfalls wavelets wet aloe-vera flora foliage fronds garden green greenery layered layers maintained multi-level papyrus perspectives placed placement planned plants reeds rockery rocks selected selective shaped shapes stones terraced textures vegetation water-plants abstract appearance backdrop background backgrounds clumps dark grass grasses growth late-afternoon reflective river river-sand riverside rushes sand sandy shining shore shoreline sunlight sunshine tides water-levels wavlets wetlands-plant anchored buoy data-collecting-buoy dissolved-oxygen electronic-data-transfer estuarine estuary fish-kill-mitigation floating-device fresh-water improving-understanding monitoring-buoys moored oxygen-levels salinity salt-water scientific-advisory solar-panel solar-powered stationary tidal tide water-quality water-quality-management beach coast coastline color colored colors colour coloured colours ocean pebbles rocky rough sea seashore seaside Sizes stony variety