The Rainmaker. In December 1915, Lake Moreno was nearly empty and everybody in San Diego prayed for rain. In desperation, the city council contacted Charles Hatfield, the Rainmaker Hatfield agreed to fill the lake for $10,000. On January 1st, 1916, he started work, using his secret rain-making chemicals. By January 5, the rain had started. By January 20, it had been raining non-stop for two weeks. On January 26, the level of the lake rose by two feet per hour when suddenly it stopped — just five inches from the top. Having kept his promise, Hatfield wanted his money. But the city council refused to pay, saying that the rain was an \"act of God\'. Hatfield had only made a verbal agreement, and had not signed a contract. He never received a penny.