This pond was scraped down to hard red mud / sand stone , using excavator's , no dozers , way to wet , the excavator buckets were smooth edge , no teeth or thumbs . Just dug out most of clay , would get down to hard pack and you could feel the scraping through your feet . The hard red beds were at all angles and depths and water levels would rise into new digs over night , beautiful clear water. losing this volume and temps from 98 - 107 with no clouds and light winds , the algae has bloomed like never before .