Early data (9/1974 through 11/1977) varies by 0.5 ft between RGWCD and USGS water-level values. It appears that the RGWCD data corresponds to the monthly DTW maps; therefore the following changes assume the RGWCD data is correct.
09/05/1974: DTW difference: RGWCD = 4.66; USGS = 4.16.
Documentation for RG69 (372403106022401) on 09/1974
10/05/1974: DTW difference: RGWCD = 5.00; USGS = 4.50.
Documentation for RG69 (372403106022401) on 10/1974
11/06/1974: DTW difference: RGWCD = 5.25; USGS = 4.75.
Documentation for RG69 (372403106022401) on 11/1974
12/04/1974: DTW difference: RGWCD = 5.41; USGS = 4.91.
Documentation for RG69 (372403106022401) on 12/1974
01/06/1975: DTW difference: RGWCD = 5.60; USGS = 5.10.
Documentation for RG69 (372403106022401) on 01/1975
02/05/1975: DTW difference: RGWCD = 5.65; USGS = 5.15.
Documentation for RG69 (372403106022401) on 02/1975
03/05/1975: DTW difference: RGWCD = 5.43; USGS = 4.93.
Documentation for RG69 (372403106022401) on 03/1975
04/07/1975: DTW difference: RGWCD = 4.08; USGS = 3.58.
Documentation for RG69 (372403106022401) on 04/1975
05/05/1975: DTW difference: RGWCD = 4.19; USGS = 3.69.
Documentation for RG69 (372403106022401) on 05/1975
06/05/1975: DTW difference: RGWCD = 2.53; USGS = 2.03.
Documentation for RG69 (372403106022401) on 06/1975
07/05/1975: DTW difference: RGWCD = 2.33USGS =not 1.83.
Documentation for RG69 (372403106022401) on 07/1975
08/05/1975: DTW difference: RGWCD = 3.25; USGS = 2.75.
Documentation for RG69 (372403106022401) on 08/1975
09/07/1975: DTW difference: RGWCD = 4.83; USGS = 4.33.
Documentation for RG69 (372403106022401) on 09/1975
10/05/1975: DTW difference: RGWCD = 5.33; USGS = 4.83.
Documentation for RG69 (372403106022401) on 10/1975
11/05/1975: DTW difference: RGWCD = 5.00; USGS = 4.50.
Documentation for RG69 (372403106022401) on 11/1975
12/05/1975: DTW difference: RGWCD = 5.16; USGS = 4.66.
Documentation for RG69 (372403106022401) on 12/1975
01/05/1976: DTW difference: RGWCD = 5.33; USGS = 4.83.
Documentation for RG69 (372403106022401) on 01/1976
03/05/1976: DTW difference: RGWCD = 5.33; USGS = 4.83.
Documentation for RG69 (372403106022401) on 03/1976
04/05/1976: DTW difference: RGWCD = 4.83; USGS = 4.33.
Documentation for RG69 (372403106022401) on 04/1976
05/05/1976: DTW difference: RGWCD = 4.25; USGS = 3.75.
Documentation for RG69 (372403106022401) on 05/1976
06/06/1976: DTW difference: RGWCD = 3.83; USGS = 3.33.
Documentation for RG69 (372403106022401) on 06/1976
07/07/1976: DTW difference: RGWCD = 3.08; USGS = 2.58.
Documentation for RG69 (372403106022401) on 07/1976
08/05/1976: DTW difference: RGWCD = 3.08; USGS = 2.58.
Documentation for RG69 (372403106022401) on 08/1976
09/03/1976: DTW difference: RGWCD = 3.58; USGS = 3.08.
Documentation for RG69 (372403106022401) on 09/1976
10/07/1976: DTW difference: RGWCD = 5.25; USGS = 4.75.
Documentation for RG69 (372403106022401) on 10/1976
11/08/1976: DTW difference: RGWCD = 5.41; USGS = 4.91.
Documentation for RG69 (372403106022401) on 11/1976
12/05/1976: DTW difference: RGWCD = 5.66; USGS = 5.16.
Documentation for RG69 (372403106022401) on 12/1976
03/07/1977: DTW difference: RGWCD = 5.33; USGS = 4.83.
Documentation for RG69 (372403106022401) on 03/1977
04/27/1977: DTW difference: RGWCD = 5.00; USGS = 5.43.
Documentation for RG69 (372403106022401) on 04/1977
08/02/1977: DTW difference: RGWCD = 3.38; USGS = 3.88.
Documentation for RG69 (372403106022401) on 08/1977
09/01/1977: DTW difference: RGWCD = 4.43; USGS = 4.93.
Documentation for RG69 (372403106022401) on 09/1977
10/05/1977: DTW difference: RGWCD = 5.25; USGS = 5.75.
Documentation for RG69 (372403106022401) on 10/1977
05/02/1978: DTW difference: RGWCD = 4.75; USGS = 5.75.
Documentation for RG69 (372403106022401) on 05/1978
06/09/1978: DTW difference: RGWCD = 4.10; USGS = 4.30.
Documentation for RG69 (372403106022401) on 06/1978
09/06/1978: DTW difference: RGWCD = 4.85; USGS = 5.35.
Documentation for RG69 (372403106022401) on 09/1978
10/03/1978: DTW difference: RGWCD = 5.79; USGS = 5.29.
Documentation for RG69 (372403106022401) on 10/1978
03/08/1987: DTW difference: RGWCD = 5.57; USGS = 5.47.
Documentation for RG69 (372403106022401) on 03/1987
USGS record dated 11/17/1994 should be changed to 11/12/1994.
Documentation for RG69 (372403106022401) on 11/1994
12/07/1995: DTW should be 5.91 not 5.90 as listed in the USGS database.
Documentation for RG69 (372403106022401) on 12/1995
02/05/1996: DTW should be 6.19 not 6.18 as listed in the USGS database.
Documentation for RG69 (372403106022401) on 02/1996
03/07/1996: DTW should be 6.02 not 6.01 as listed in the USGS database.
Documentation for RG69 (372403106022401) on 03/1996
04/11/1996: DTW should be 5.86 not 5.85 as listed in the USGS database.
Documentation for RG69 (372403106022401) on 04/1996
06/02/1998: DTW should be 5.12 not 5.13 as listed in the USGS database.
Documentation for RG69 (372403106022401) on 06/1998