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Groundwater levels for the Nation
Agency code = | usgs |
---|---|
site_no list = |
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Minimum number of levels = | 1 |
Table of data |
Tab-separated data |
Graph of data |
Reselect period |
Date | Time |
Water-level date-time accuracy |
Parameter code | Water level, feet below land surface |
Water level, feet above specific vertical datum |
Referenced vertical datum |
Status |
Method of measurement |
Measuring agency |
Source of measurement |
Water-level approval status |
---|---|---|---|---|---|---|---|---|---|---|---|
2011-04-08 | 17:20 UTC | m | 62610 |   | -107.00 | NGVD29 | 1 | O | USGS | S | A |
2011-04-08 | 17:20 UTC | m | 62611 |   | -108.12 | NAVD88 | 1 | O | USGS | S | A |
2011-04-08 | 17:20 UTC | m | 72019 | 136.00 |   |   | 1 | O | USGS | S | A |
2011-05-10 | 15:56 UTC | m | 62610 |   | -82.71 | NGVD29 | 1 | S | VA087 | A | A |
2011-05-10 | 15:56 UTC | m | 62611 |   | -83.83 | NAVD88 | 1 | S | VA087 | A | A |
2011-05-10 | 15:56 UTC | m | 72019 | 111.71 |   |   | 1 | S | VA087 | A | A |
2011-08-08 | 18:43 UTC | m | 62610 |   | -83.30 | NGVD29 | 1 | S | VA087 | A | A |
2011-08-08 | 18:43 UTC | m | 62611 |   | -84.42 | NAVD88 | 1 | S | VA087 | A | A |
2011-08-08 | 18:43 UTC | m | 72019 | 112.30 |   |   | 1 | S | VA087 | A | A |
2011-10-04 | 20:22 UTC | m | 62610 |   | -83.03 | NGVD29 | 1 | S | VA087 | A | A |
2011-10-04 | 20:22 UTC | m | 62611 |   | -84.15 | NAVD88 | 1 | S | VA087 | A | A |
2011-10-04 | 20:22 UTC | m | 72019 | 112.03 |   |   | 1 | S | VA087 | A | A |
2012-01-18 | 20:17 UTC | m | 62610 |   | -82.82 | NGVD29 | 1 | S | VA087 | A | A |
2012-01-18 | 20:17 UTC | m | 62611 |   | -83.94 | NAVD88 | 1 | S | VA087 | A | A |
2012-01-18 | 20:17 UTC | m | 72019 | 111.82 |   |   | 1 | S | VA087 | A | A |
2012-05-01 | 13:03 UTC | m | 62610 |   | -82.75 | NGVD29 | 1 | S | VA087 | A | A |
2012-05-01 | 13:03 UTC | m | 62611 |   | -83.87 | NAVD88 | 1 | S | VA087 | A | A |
2012-05-01 | 13:03 UTC | m | 72019 | 111.75 |   |   | 1 | S | VA087 | A | A |
2012-08-02 | 11:33 UTC | m | 62610 |   | -83.06 | NGVD29 | 1 | S | VA087 | A | A |
2012-08-02 | 11:33 UTC | m | 62611 |   | -84.18 | NAVD88 | 1 | S | VA087 | A | A |
2012-08-02 | 11:33 UTC | m | 72019 | 112.06 |   |   | 1 | S | VA087 | A | A |
2012-11-11 | 15:55 UTC | m | 62610 |   | -83.51 | NGVD29 | 1 | S | VA087 | A | A |
2012-11-11 | 15:55 UTC | m | 62611 |   | -84.63 | NAVD88 | 1 | S | VA087 | A | A |
2012-11-11 | 15:55 UTC | m | 72019 | 112.51 |   |   | 1 | S | VA087 | A | A |
2012-11-15 | 20:35 UTC | m | 62610 |   | -83.52 | NGVD29 | 1 | S | VA087 | A | A |
2012-11-15 | 20:35 UTC | m | 62611 |   | -84.64 | NAVD88 | 1 | S | VA087 | A | A |
2012-11-15 | 20:35 UTC | m | 72019 | 112.52 |   |   | 1 | S | VA087 | A | A |
2013-04-09 | 17:57 UTC | m | 62610 |   | -83.06 | NGVD29 | 1 | S | VA087 | A | A |
2013-04-09 | 17:57 UTC | m | 62611 |   | -84.18 | NAVD88 | 1 | S | VA087 | A | A |
2013-04-09 | 17:57 UTC | m | 72019 | 112.06 |   |   | 1 | S | VA087 | A | A |
2013-08-13 | 14:44 UTC | m | 62610 |   | -83.17 | NGVD29 | 1 | S | VA087 | A | A |
2013-08-13 | 14:44 UTC | m | 62611 |   | -84.29 | NAVD88 | 1 | S | VA087 | A | A |
2013-08-13 | 14:44 UTC | m | 72019 | 112.17 |   |   | 1 | S | VA087 | A | A |
2013-10-22 | 14:50 UTC | m | 62610 |   | -83.43 | NGVD29 | 1 | S | VA087 | A | A |
2013-10-22 | 14:50 UTC | m | 62611 |   | -84.55 | NAVD88 | 1 | S | VA087 | A | A |
2013-10-22 | 14:50 UTC | m | 72019 | 112.43 |   |   | 1 | S | VA087 | A | A |
2014-01-15 | 18:27 UTC | m | 62610 |   | -83.07 | NGVD29 | 1 | S | VA087 | A | A |
2014-01-15 | 18:27 UTC | m | 62611 |   | -84.19 | NAVD88 | 1 | S | VA087 | A | A |
2014-01-15 | 18:27 UTC | m | 72019 | 112.07 |   |   | 1 | S | VA087 | A | A |
2014-04-08 | 18:51 UTC | m | 62610 |   | -82.75 | NGVD29 | 1 | S | VA087 | A | A |
2014-04-08 | 18:51 UTC | m | 62611 |   | -83.87 | NAVD88 | 1 | S | VA087 | A | A |
2014-04-08 | 18:51 UTC | m | 72019 | 111.75 |   |   | 1 | S | VA087 | A | A |
2014-06-26 | 18:21 UTC | m | 62610 |   | -82.83 | NGVD29 | 1 | S | VA087 | A | A |
2014-06-26 | 18:21 UTC | m | 62611 |   | -83.95 | NAVD88 | 1 | S | VA087 | A | A |
2014-06-26 | 18:21 UTC | m | 72019 | 111.83 |   |   | 1 | S | VA087 | A | A |
2014-10-02 | 19:18 UTC | m | 62610 |   | -83.65 | NGVD29 | 1 | S | VA087 | A | A |
2014-10-02 | 19:18 UTC | m | 62611 |   | -84.77 | NAVD88 | 1 | S | VA087 | A | A |
2014-10-02 | 19:18 UTC | m | 72019 | 112.65 |   |   | 1 | S | VA087 | A | A |
2015-01-28 | 19:03 UTC | m | 62610 |   | -83.55 | NGVD29 | 1 | S | VA087 | A | A |
2015-01-28 | 19:03 UTC | m | 62611 |   | -84.67 | NAVD88 | 1 | S | VA087 | A | A |
2015-01-28 | 19:03 UTC | m | 72019 | 112.55 |   |   | 1 | S | VA087 | A | A |
2015-02-11 | 17:27 UTC | m | 62610 |   | -83.54 | NGVD29 | 1 | S | VA087 | A | A |
2015-02-11 | 17:27 UTC | m | 62611 |   | -84.66 | NAVD88 | 1 | S | VA087 | A | A |
2015-02-11 | 17:27 UTC | m | 72019 | 112.54 |   |   | 1 | S | VA087 | A | A |
2015-03-25 | 17:37 UTC | m | 62610 |   | -83.54 | NGVD29 | 1 | S | VA087 | A | A |
2015-03-25 | 17:37 UTC | m | 62611 |   | -84.66 | NAVD88 | 1 | S | VA087 | A | A |
2015-03-25 | 17:37 UTC | m | 72019 | 112.54 |   |   | 1 | S | VA087 | A | A |
2015-04-02 | 19:02 UTC | m | 62610 |   | -83.56 | NGVD29 | 1 | S | VA087 | A | A |
2015-04-02 | 19:02 UTC | m | 62611 |   | -84.68 | NAVD88 | 1 | S | VA087 | A | A |
2015-04-02 | 19:02 UTC | m | 72019 | 112.56 |   |   | 1 | S | VA087 | A | A |
2015-07-07 | 11:51 UTC | m | 62610 |   | -83.53 | NGVD29 | 1 | S | VA087 | A | A |
2015-07-07 | 11:51 UTC | m | 62611 |   | -84.65 | NAVD88 | 1 | S | VA087 | A | A |
2015-07-07 | 11:51 UTC | m | 72019 | 112.53 |   |   | 1 | S | VA087 | A | A |
2015-07-17 | 13:14 UTC | m | 62610 |   | -83.64 | NGVD29 | 1 | S | VA087 | A | A |
2015-07-17 | 13:14 UTC | m | 62611 |   | -84.76 | NAVD88 | 1 | S | VA087 | A | A |
2015-07-17 | 13:14 UTC | m | 72019 | 112.64 |   |   | 1 | S | VA087 | A | A |
2015-07-20 | 11:43 UTC | m | 62610 |   | -83.61 | NGVD29 | 1 | S | VA087 | A | A |
2015-07-20 | 11:43 UTC | m | 62611 |   | -84.73 | NAVD88 | 1 | S | VA087 | A | A |
2015-07-20 | 11:43 UTC | m | 72019 | 112.61 |   |   | 1 | S | VA087 | A | A |
2015-07-20 | 13:20 UTC | m | 62610 |   | -83.51 | NGVD29 | 1 | S | VA087 | A | A |
2015-07-20 | 13:20 UTC | m | 62611 |   | -84.63 | NAVD88 | 1 | S | VA087 | A | A |
2015-07-20 | 13:20 UTC | m | 72019 | 112.51 |   |   | 1 | S | VA087 | A | A |
2015-10-21 | 14:21 UTC | m | 62610 |   | -84.47 | NGVD29 | 1 | S | VA087 | A | A |
2015-10-21 | 14:21 UTC | m | 62611 |   | -85.59 | NAVD88 | 1 | S | VA087 | A | A |
2015-10-21 | 14:21 UTC | m | 72019 | 113.47 |   |   | 1 | S | VA087 | A | A |
2016-01-12 | 15:21 UTC | m | 62610 |   | -84.11 | NGVD29 | 1 | S | VA087 | A | A |
2016-01-12 | 15:21 UTC | m | 62611 |   | -85.23 | NAVD88 | 1 | S | VA087 | A | A |
2016-01-12 | 15:21 UTC | m | 72019 | 113.11 |   |   | 1 | S | VA087 | A | A |
2016-04-05 | 18:34 UTC | m | 62610 |   | -83.89 | NGVD29 | 1 | S | VA087 | A | A |
2016-04-05 | 18:34 UTC | m | 62611 |   | -85.01 | NAVD88 | 1 | S | VA087 | A | A |
2016-04-05 | 18:34 UTC | m | 72019 | 112.89 |   |   | 1 | S | VA087 | A | A |
2016-07-11 | 13:21 UTC | m | 62610 |   | -83.32 | NGVD29 | 1 | S | VA087 | A | A |
2016-07-11 | 13:21 UTC | m | 62611 |   | -84.44 | NAVD88 | 1 | S | VA087 | A | A |
2016-07-11 | 13:21 UTC | m | 72019 | 112.32 |   |   | 1 | S | VA087 | A | A |
2016-10-24 | 14:35 UTC | m | 62610 |   | -83.67 | NGVD29 | 1 | S | VA087 | A | A |
2016-10-24 | 14:35 UTC | m | 62611 |   | -84.79 | NAVD88 | 1 | S | VA087 | A | A |
2016-10-24 | 14:35 UTC | m | 72019 | 112.67 |   |   | 1 | S | VA087 | A | A |
2017-01-17 | 17:23 UTC | m | 62610 |   | -83.33 | NGVD29 | 1 | S | VA087 | A | A |
2017-01-17 | 17:23 UTC | m | 62611 |   | -84.45 | NAVD88 | 1 | S | VA087 | A | A |
2017-01-17 | 17:23 UTC | m | 72019 | 112.33 |   |   | 1 | S | VA087 | A | A |
2017-04-17 | 14:56 UTC | m | 62610 |   | -82.87 | NGVD29 | 1 | S | VA087 | A | A |
2017-04-17 | 14:56 UTC | m | 62611 |   | -83.99 | NAVD88 | 1 | S | VA087 | A | A |
2017-04-17 | 14:56 UTC | m | 72019 | 111.87 |   |   | 1 | S | VA087 | A | A |
2017-07-27 | 12:47 UTC | m | 62610 |   | -83.03 | NGVD29 | 1 | S | VA087 | A | A |
2017-07-27 | 12:47 UTC | m | 62611 |   | -84.15 | NAVD88 | 1 | S | VA087 | A | A |
2017-07-27 | 12:47 UTC | m | 72019 | 112.03 |   |   | 1 | S | VA087 | A | A |
2017-10-13 | 14:15 UTC | m | 62610 |   | -83.30 | NGVD29 | 1 | S | VA087 | A | A |
2017-10-13 | 14:15 UTC | m | 62611 |   | -84.42 | NAVD88 | 1 | S | VA087 | A | A |
2017-10-13 | 14:15 UTC | m | 72019 | 112.30 |   |   | 1 | S | VA087 | A | A |
2018-01-10 | 17:28 UTC | m | 62610 |   | -83.15 | NGVD29 | 1 | S | VA087 | A | A |
2018-01-10 | 17:28 UTC | m | 62611 |   | -84.27 | NAVD88 | 1 | S | VA087 | A | A |
2018-01-10 | 17:28 UTC | m | 72019 | 112.15 |   |   | 1 | S | VA087 | A | A |
2018-04-18 | 16:15 UTC | m | 62610 |   | -82.65 | NGVD29 | 1 | S | VA087 | A | A |
2018-04-18 | 16:15 UTC | m | 62611 |   | -83.77 | NAVD88 | 1 | S | VA087 | A | A |
2018-04-18 | 16:15 UTC | m | 72019 | 111.65 |   |   | 1 | S | VA087 | A | A |
2018-07-11 | 13:40 UTC | m | 62610 |   | -82.37 | NGVD29 | 1 | S | VA087 | A | A |
2018-07-11 | 13:40 UTC | m | 62611 |   | -83.49 | NAVD88 | 1 | S | VA087 | A | A |
2018-07-11 | 13:40 UTC | m | 72019 | 111.37 |   |   | 1 | S | VA087 | A | A |
2018-10-03 | 16:38 UTC | m | 62610 |   | -82.37 | NGVD29 | 1 | S | VA087 | A | A |
2018-10-03 | 16:38 UTC | m | 62611 |   | -83.49 | NAVD88 | 1 | S | VA087 | A | A |
2018-10-03 | 16:38 UTC | m | 72019 | 111.37 |   |   | 1 | S | VA087 | A | A |
2019-01-23 | 16:41 UTC | m | 62610 |   | -81.80 | NGVD29 | 1 | S | USGS | S | A |
2019-01-23 | 16:41 UTC | m | 62611 |   | -82.92 | NAVD88 | 1 | S | USGS | S | A |
2019-01-23 | 16:41 UTC | m | 72019 | 110.80 |   |   | 1 | S | USGS | S | A |
2019-04-03 | 14:09 UTC | m | 62610 |   | -81.60 | NGVD29 | 1 | S | VA087 | A | A |
2019-04-03 | 14:09 UTC | m | 62611 |   | -82.72 | NAVD88 | 1 | S | VA087 | A | A |
2019-04-03 | 14:09 UTC | m | 72019 | 110.60 |   |   | 1 | S | VA087 | A | A |
2019-07-24 | 18:37 UTC | m | 62610 |   | -81.65 | NGVD29 | 1 | S | VA087 | A | A |
2019-07-24 | 18:37 UTC | m | 62611 |   | -82.77 | NAVD88 | 1 | S | VA087 | A | A |
2019-07-24 | 18:37 UTC | m | 72019 | 110.65 |   |   | 1 | S | VA087 | A | A |
2019-10-09 | 15:06 UTC | m | 62610 |   | -82.47 | NGVD29 | 1 | S | VA087 | A | A |
2019-10-09 | 15:06 UTC | m | 62611 |   | -83.59 | NAVD88 | 1 | S | VA087 | A | A |
2019-10-09 | 15:06 UTC | m | 72019 | 111.47 |   |   | 1 | S | VA087 | A | A |
2020-01-07 | 14:35 UTC | m | 62610 |   | -82.05 | NGVD29 | 1 | S | VA087 | A | A |
2020-01-07 | 14:35 UTC | m | 62611 |   | -83.17 | NAVD88 | 1 | S | VA087 | A | A |
2020-01-07 | 14:35 UTC | m | 72019 | 111.05 |   |   | 1 | S | VA087 | A | A |
2020-04-16 | 15:19 UTC | m | 62610 |   | -81.52 | NGVD29 | 1 | S | VA087 | A | A |
2020-04-16 | 15:19 UTC | m | 62611 |   | -82.64 | NAVD88 | 1 | S | VA087 | A | A |
2020-04-16 | 15:19 UTC | m | 72019 | 110.52 |   |   | 1 | S | VA087 | A | A |
2020-10-02 | 16:40 UTC | m | 62610 |   | -81.06 | NGVD29 | 1 | S | VA087 | A | A |
2020-10-02 | 16:40 UTC | m | 62611 |   | -82.18 | NAVD88 | 1 | S | VA087 | A | A |
2020-10-02 | 16:40 UTC | m | 72019 | 110.06 |   |   | 1 | S | VA087 | A | A |
2021-01-14 | 17:07 UTC | m | 62610 |   | -80.29 | NGVD29 | 1 | S | VA087 | A | A |
2021-01-14 | 17:07 UTC | m | 62611 |   | -81.41 | NAVD88 | 1 | S | VA087 | A | A |
2021-01-14 | 17:07 UTC | m | 72019 | 109.29 |   |   | 1 | S | VA087 | A | A |
2021-06-11 | 13:10 UTC | m | 62610 |   | -79.85 | NGVD29 | 1 | S | VA087 | A | A |
2021-06-11 | 13:10 UTC | m | 62611 |   | -80.97 | NAVD88 | 1 | S | VA087 | A | A |
2021-06-11 | 13:10 UTC | m | 72019 | 108.85 |   |   | 1 | S | VA087 | A | A |
2021-10-08 | 14:04 UTC | m | 62610 |   | -80.76 | NGVD29 | 1 | S | VA087 | A | A |
2021-10-08 | 14:04 UTC | m | 62611 |   | -81.88 | NAVD88 | 1 | S | VA087 | A | A |
2021-10-08 | 14:04 UTC | m | 72019 | 109.76 |   |   | 1 | S | VA087 | A | A |
2022-02-17 | 15:29 UTC | m | 62610 |   | -80.16 | NGVD29 | 1 | S | VA087 | A | A |
2022-02-17 | 15:29 UTC | m | 62611 |   | -81.28 | NAVD88 | 1 | S | VA087 | A | A |
2022-02-17 | 15:29 UTC | m | 72019 | 109.16 |   |   | 1 | S | VA087 | A | A |
2022-05-05 | 15:27 UTC | m | 62610 |   | -79.96 | NGVD29 | 1 | S | VA087 | A | A |
2022-05-05 | 15:27 UTC | m | 62611 |   | -81.08 | NAVD88 | 1 | S | VA087 | A | A |
2022-05-05 | 15:27 UTC | m | 72019 | 108.96 |   |   | 1 | S | VA087 | A | A |
2022-07-14 | 16:06 UTC | m | 62610 |   | -80.47 | NGVD29 | 1 | S | VADEQ | A | A |
2022-07-14 | 16:06 UTC | m | 62611 |   | -81.59 | NAVD88 | 1 | S | VADEQ | A | A |
2022-07-14 | 16:06 UTC | m | 72019 | 109.47 |   |   | 1 | S | VADEQ | A | A |
2022-10-12 | 13:20 UTC | m | 62610 |   | -81.22 | NGVD29 | 1 | S | VA087 | A | A |
2022-10-12 | 13:20 UTC | m | 62611 |   | -82.34 | NAVD88 | 1 | S | VA087 | A | A |
2022-10-12 | 13:20 UTC | m | 72019 | 110.22 |   |   | 1 | S | VA087 | A | A |
2023-01-23 | 16:28 UTC | m | 62610 |   | -80.72 | NGVD29 | 1 | S | VADEQ | A | A |
2023-01-23 | 16:28 UTC | m | 62611 |   | -81.84 | NAVD88 | 1 | S | VADEQ | A | A |
2023-01-23 | 16:28 UTC | m | 72019 | 109.72 |   |   | 1 | S | VADEQ | A | A |
2023-04-11 | 13:33 UTC | m | 62610 |   | -80.52 | NGVD29 | 1 | S | VADEQ | A | A |
2023-04-11 | 13:33 UTC | m | 62611 |   | -81.64 | NAVD88 | 1 | S | VADEQ | A | A |
2023-04-11 | 13:33 UTC | m | 72019 | 109.52 |   |   | 1 | S | VADEQ | A | A |
2023-07-31 | 14:43 UTC | m | 62610 |   | -80.25 | NGVD29 | 1 | S | VADEQ | A | A |
2023-07-31 | 14:43 UTC | m | 62611 |   | -81.37 | NAVD88 | 1 | S | VADEQ | A | A |
2023-07-31 | 14:43 UTC | m | 72019 | 109.25 |   |   | 1 | S | VADEQ | A | A |
2023-10-10 | 17:18 UTC | m | 62610 |   | -80.59 | NGVD29 | 1 | S | VADEQ | A | A |
2023-10-10 | 17:18 UTC | m | 62611 |   | -81.71 | NAVD88 | 1 | S | VADEQ | A | A |
2023-10-10 | 17:18 UTC | m | 72019 | 109.59 |   |   | 1 | S | VADEQ | A | A |
2023-12-14 | 16:20 UTC | m | 62610 |   | -80.59 | NGVD29 | 1 | S | VA087 | A | A |
2023-12-14 | 16:20 UTC | m | 62611 |   | -81.71 | NAVD88 | 1 | S | VA087 | A | A |
2023-12-14 | 16:20 UTC | m | 72019 | 109.59 |   |   | 1 | S | VA087 | A | A |
2024-02-22 | 17:17 UTC | m | 62610 |   | -80.14 | NGVD29 | 1 | S | VA087 | A | A |
2024-02-22 | 17:17 UTC | m | 62611 |   | -81.26 | NAVD88 | 1 | S | VA087 | A | A |
2024-02-22 | 17:17 UTC | m | 72019 | 109.14 |   |   | 1 | S | VA087 | A | A |
2024-05-15 | 14:30 UTC | m | 62610 |   | -79.74 | NGVD29 | 1 | S | VA087 | A | A |
2024-05-15 | 14:30 UTC | m | 62611 |   | -80.86 | NAVD88 | 1 | S | VA087 | A | A |
2024-05-15 | 14:30 UTC | m | 72019 | 108.74 |   |   | 1 | S | VA087 | A | A |
2024-08-06 | 14:03 UTC | m | 62610 |   | -80.59 | NGVD29 | 1 | S | VA087 | A | P |
2024-08-06 | 14:03 UTC | m | 62611 |   | -81.71 | NAVD88 | 1 | S | VA087 | A | P |
2024-08-06 | 14:03 UTC | m | 72019 | 109.59 |   |   | 1 | S | VA087 | A | P |
2024-10-29 | 13:45 UTC | m | 62610 |   | -80.98 | NGVD29 | 1 | S | VA087 | A | P |
2024-10-29 | 13:45 UTC | m | 62611 |   | -82.10 | NAVD88 | 1 | S | VA087 | A | P |
2024-10-29 | 13:45 UTC | m | 72019 | 109.98 |   |   | 1 | S | VA087 | A | P |
Section | Code | Description |
---|---|---|
Water-level date-time accuracy | m | Date is accurate to the Minute |
Parameter code | 62610 | Groundwater level above NGVD 1929, feet |
Parameter code | 62611 | Groundwater level above NAVD 1988, feet |
Parameter code | 72019 | Depth to water level, feet below land surface |
Referenced vertical datum | NAVD88 | North American Vertical Datum of 1988 |
Referenced vertical datum | NGVD29 | National Geodetic Vertical Datum of 1929 |
Status | 1 | Static |
Method of measurement | O | Observed. |
Method of measurement | S | Steel-tape measurement. |
Measuring agency | USGS | U.S. Geological Survey |
Measuring agency | VA087 | Virginia Department of Environmental Quality |
Measuring agency | VADEQ | Not determined |
Source of measurement | A | Reported by another government agency (do not use "A" if reported by owner, use "O"). |
Source of measurement | S | Measured by personnel of reporting agency. |
Water-level approval status | A | Approved for publication -- Processing and review completed. |
Water-level approval status | P | Provisional data subject to revision. |