Robert E. Horton coined these four laws: the law of stream numbers, the law of stream lengths, the limits of infiltration capacity, and the runoff-detention-storage relation.
What are they specifically? Googling only yielded me paywalled articles and test questions. A good answer will state the laws and provide a brief explanation of what they mean. I want to understand what they tell me about river systems and what comparisons between different rivers I can make based on them. I'm not looking for an in-depth examination, or for an excourse on the purely mathematical side.