Download LOLA Lunar Crater Data, LolaLargeLunarCraterCatalog.csv, and the MESSENGER and Mariner 10 data, MercLargeCraters.csv.
Pike (1974) found empirical relationships between crater depth and diameter based on 171 small craters less than 15km in diameter. Elachi (1976) also plotted his small crater depths to their diameters, finding that for his small sample of craters less than 30km in diameter, the ratio of the crater depth was also a constant.
The file crater_depth.csv contains crater diameter and depth data for a sample of small craters.