There is a consistent 0.4-ft offset between the USGS and RGWCD database depth to water values during the period 09/05/1974 through 03/07/1977 then the offset shifts to 0.5-ft on 04/01/1977 and it then shifts to 0.07-ft on 05/02/1978. See the recommended changes below.
09/05/1974: DTW difference: RGWCD = 4.83; USGS = 4.43.
Documentation for RG24 (375016105521901) on 09/1974
10/05/1974: DTW difference: RGWCD = 4.58; USGS = 4.18.
Documentation for RG24 (375016105521901) on 10/1974
11/06/1974: DTW difference: RGWCD = 5.50; USGS = 5.10.
Documentation for RG24 (375016105521901) on 11/1974
12/04/1974: DTW difference: RGWCD = 5.25; USGS = 4.85.
Documentation for RG24 (375016105521901) on 12/1974
01/06/1975: DTW difference: RGWCD = 3.54; USGS = 3.14.
Documentation for RG24 (375016105521901) on 01/1975
02/05/1975: DTW difference: RGWCD = 2.73; USGS = 2.33.
Documentation for RG24 (375016105521901) on 02/1975
03/05/1975: DTW difference: RGWCD = 3.51; USGS = 3.11.
Documentation for RG24 (375016105521901) on 03/1975
05/05/1975: DTW difference: RGWCD = 2.83; USGS = 2.43.
Documentation for RG24 (375016105521901) on 05/1975
06/05/1975: DTW difference: RGWCD = 3.18; USGS = 2.78.
Documentation for RG24 (375016105521901) on 06/1975
07/05/1975: DTW difference: RGWCD = 4.25; USGS = 3.85.
Documentation for RG24 (375016105521901) on 07/1975
08/05/1975: DTW difference: RGWCD = 4.50; USGS = 4.10.
Documentation for RG24 (375016105521901) on 08/1975
09/07/1975: DTW difference: RGWCD = 4.66; USGS = 4.26.
Documentation for RG24 (375016105521901) on 09/1975
10/05/1975: DTW difference: RGWCD = 4.66; USGS = 4.26.
Documentation for RG24 (375016105521901) on 10/1975
11/05/1975: DTW difference: RGWCD = 4.66; USGS = 4.26.
Documentation for RG24 (375016105521901) on 11/1975
12/05/1975: DTW difference: RGWCD = 4.41; USGS = 4.01.
Documentation for RG24 (375016105521901) on 12/1975
01/05/1976: DTW difference: RGWCD = 4.41; USGS = 4.01.
Documentation for RG24 (375016105521901) on 01/1976
02/04/1976: DTW difference: RGWCD = 4.41; USGS = 4.01.
Documentation for RG24 (375016105521901) on 02/1976
03/15/1976: DTW difference: RGWCD = 3.83; USGS = 3.43.
Documentation for RG24 (375016105521901) on 03/1976
04/15/1976: DTW difference: RGWCD = 3.16; USGS = 2.76.
Documentation for RG24 (375016105521901) on 04/1976
05/15/1976: DTW difference: RGWCD = 3.41; USGS = 3.01.
Documentation for RG24 (375016105521901) on 05/1976
06/05/1976: DTW difference: RGWCD = 3.50; USGS = 3.10.
Documentation for RG24 (375016105521901) on 06/1976
07/15/1976: DTW difference: RGWCD = 4.08; USGS = 3.68.
Documentation for RG24 (375016105521901) on 07/1976
08/15/1976: DTW difference: RGWCD = 2.58; USGS = 2.18.
Documentation for RG24 (375016105521901) on 08/1976
09/03/1976: DTW difference: RGWCD = 3.16; USGS = 2.76.
Documentation for RG24 (375016105521901) on 09/1976
10/07/1976: DTW difference: RGWCD = 4.33; USGS = 3.93.
Documentation for RG24 (375016105521901) on 10/1976
11/05/1976: DTW difference: RGWCD = 4.33; USGS = 3.93.
Documentation for RG24 (375016105521901) on 11/1976
02/05/1977: DTW difference: RGWCD = 4.58; USGS = 4.18.
Documentation for RG24 (375016105521901) on 02/1977
03/07/1977: DTW difference: RGWCD = 4.41; USGS = 4.01.
Documentation for RG24 (375016105521901) on 03/1977
04/01/1977: DTW difference: RGWCD = 4.50; USGS = 5.00.
Documentation for RG24 (375016105521901) on 04/1977
05/02/1978: DTW difference: RGWCD = 4.48; USGS = 4.41.
Documentation for RG24 (375016105521901) on 05/1978
06/09/1978: DTW difference: RGWCD = 4.77; USGS = 4.70.
Documentation for RG24 (375016105521901) on 06/1978
The USGS database is missing records for the time period 2/6/1980 through 10/5/1981.