Many North Dakota lake depths are probably in feet, not meters

[AndyMcAliley]

I compared lake depths in 7_config_merge/out/nml_lake_depth_values.rds to lake depths in LAGOS-US. There are a number of lakes with depths that are about three times larger than the LAGOS depths, suggesting that they are in feet, not meters. Digging further, I found that most of those probably-in-feet depths are coming from NDGF. I think the relevant files on Google Drive are 3_params_fetch/out/ndgf_lake_maxdepth.rds and 3_params_fetch/out/ndgf_lake_contours.rds, which are used to build 4_params_munge/out/ndgf_depths.rds and 4_params_munge/out/ndgf_bathy.rds. In 4_params_munge/out/ndgf_bathy.rds, there are 173 lakes. 140 of them have LAGOS depths. All 140 of the LAGOS depths are less than half of the depth values here, and most LAGOS values are right around 0.3 times as large (there are 0.3048 meters per foot). It seems likely that the units of NDGF depths are feet and not meters.