I am considering going no dig. My site slopes gently and if I pour water on the ground, particularly dry ground, the water spreads out and elopes down the slope. To avoid this I sow and grow everything in furrows aligned across the slope and the furrows contain the water around the plants. Occasionally repairs are required as the water in a furrow / rampart/ depression breaks the banks. This method preferably requires using a watering-can. I try and gauge how much water to give by digging test holes with my trowel. So in the recent hot summer a 4.5 metres row of carrots needed in the region of 12 gallons of water every 9 days. It may be that after several years my soil will become more porous but what can I do in the interim? With the no dig method how do you know when to water, where the water goes when you do water, and how much water to give? I have thin chalky soil so I can not make terraces.