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Station Summary


Department of Water and Environmental Regulation                                             HYSITREP V132  Output 22/02/2024 Page 1
                                                   HYSITREP - Site Summary Report                                                   
                                             704139 - Gascoyne River - Nine Mile Bridge                                             

SITE DESCRIPTION
Site:                      704139 Nine Mile Bridge
Site Name:                 Gascoyne River - Nine Mile Bridge 
Infrastructure commenced:  1/02/1956   Ceased:   
Grid Ref: Zone:            49 
Easting:                   779892.060                     Northing:   7251298.459                     Grid Datum:      MGA2020 Map Grid of Australia 2020
Latitude:                  -24.827615413  2449'39.4"S    Longitude:  113.769133050 11346'08.9"E     Lat/Long Datum:  GDA2020 Geocentric Datum of Australia 2020
Comment:                  Following on from the Memorandum "Nine Mile Bridge Gascoyne River Stream and
                          EC/Temp Data" dated 21/09/2012, there have been further changes to the station
                          numbering of the sites 704139 (Nine Mile Bridge) and 704138 (Nine Mile Bridge -
                          Right Bank).
                          These changes have coincided with the re-installation of Water Surface Level and
                          Electrical Conductivity measurement infrastructure on the right bank at Nine Mile
                          Bridge.
                          On 04/02/2016 an air purge system (OTT) was installed to measure continuous water
                          surface level data at the right bank site. A 4EC electrical conductivity probe and logger
                          was also installed on the right bank site on 31/05/2016. Both types of instrumentation
                          were installed in new conduits near the instrumentation damaged in 2010.
                          The installation of a radar unit to measure water surface level from the Nine Mile
                          Bridge is currently planned.
                          The new air purge system, radar unit and conductivity unit were all initially planned to
                          report back via radio to the NEON unit located within the float well and to be reported
                          through NEON as 704139. However, due to technical difficulties the right bank will
                          likely now report to NEON via a separate NEON unit, however, the data telemetered
                          by this unit will still be stored under 704139 in HYDSTRA.
                          Station and Variable Numbering
                          The following decisions and actions have been made in relation to the station and
                          variable numbering from data collected at Nine Mile Bridge:
                           Both 704138 and 704139 are in the process of being combined into the one
                          site: 704139 - Nine Mile Bridge.
                           All variables recorded at both 704138 and 704139 are being stored under
                          704139:
                          o The float well WSL data is remaining the primary variable (10.00).
                          o The WSL data from 704138 is in the process of being copied and stored
                          as a WSL sub-variable of 704139 (ie 10.01).
                          o The air purge system on the right bank is being stored as sub-variable
                          (10.01) - it will be a continuation of the data copied over from 704138.
                          o Conductivity (variable 80.00) and temperature (variable 24.00) data from
                          704138 is in the process of being copied and stored under 704139.
                          o Conductivity and temperature data collected from the 4EC Conductivity
                          unit on the right bank is being stored as variables 80.00 and 24.00,
                          respectively - this data will be a continuation of the data copied over
                          from 704138.
                          o The radar unit to be deployed in the future will be recorded as a second
                          sub variable (10.02).
                           The site number 704138 has been closed - the data has been retained for
                          historical reference.

STATION DESCRIPTION
Control description:       
Max Gauged Stage:         15.392 
Max Gauge Date:           3/04/2006 
D'stream from Dam:        False 
Catchment Area:           74432.100

RATING TABLES
 Var                            Var                         Start       Start
 From                           To                          Date        Time    Site                Table
   10.00 STAGE (m)               140 Discharge (m/s)       04/04/1956  02:20   704139                 70
   10.00 STAGE (m)               140 Discharge (m/s)       30/09/1956  00:00   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       25/01/1958  00:00   704139                 64

Department of Water and Environmental Regulation                                             HYSITREP V132  Output 22/02/2024 Page 2
                                                   HYSITREP - Site Summary Report                                                   
                                             704139 - Gascoyne River - Nine Mile Bridge                                             

   10.00 STAGE (m)               140 Discharge (m/s)       20/03/1958  00:00   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       13/01/1963  00:00   704139                 64
   10.00 STAGE (m)               140 Discharge (m/s)       21/03/1965  12:00   704139                 61
   10.00 STAGE (m)               140 Discharge (m/s)       17/09/1965  09:36:25   704139                 72
   10.00 STAGE (m)               140 Discharge (m/s)       01/10/1966  00:00   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       06/06/1967  12:00   704139                 72
   10.00 STAGE (m)               140 Discharge (m/s)       17/06/1968  00:00   704139                 70
   10.00 STAGE (m)               140 Discharge (m/s)       24/02/1969  00:00   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       10/06/1971  00:00   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       03/04/1975  00:00   704139                 72
   10.00 STAGE (m)               140 Discharge (m/s)       05/11/1975  00:00   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       03/10/1977  00:00   704139                 64
   10.00 STAGE (m)               140 Discharge (m/s)       27/02/1978  20:00   704139                 64
   10.00 STAGE (m)               140 Discharge (m/s)       19/02/1979  07:30   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       03/10/1979  00:00   704139                 64
   10.00 STAGE (m)               140 Discharge (m/s)       09/04/1980  00:49:25   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       10/03/1981  04:30   704139                 66
   10.00 STAGE (m)               140 Discharge (m/s)       13/02/1982  13:01   704139                 72
   10.00 STAGE (m)               140 Discharge (m/s)       30/05/1982  15:00   704139                 66
   10.00 STAGE (m)               140 Discharge (m/s)       04/03/1984  19:00   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       01/06/1992  20:40   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       16/02/1995  00:00   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       01/02/1997  00:00   704139                 58
   10.00 STAGE (m)               140 Discharge (m/s)       04/08/1998  04:45   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       25/03/1999  12:00   704139                 58
   10.00 STAGE (m)               140 Discharge (m/s)       11/03/2000  13:35   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       23/01/2001  08:30   704139                 69
   10.00 STAGE (m)               140 Discharge (m/s)       08/03/2006  01:40   704139                 70
   10.00 STAGE (m)               140 Discharge (m/s)       29/09/2007  00:17:21   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       22/02/2008  02:05   704139                 72
   10.00 STAGE (m)               140 Discharge (m/s)       29/01/2009  00:00   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       15/12/2010  23:00   704139                 66
   10.00 STAGE (m)               140 Discharge (m/s)       05/03/2015  00:00   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       05/02/2017  00:00   704139                 73
   10.00 STAGE (m)               140 Discharge (m/s)       17/01/2018  04:50   704139                 69
   10.00 STAGE (m)               140 Discharge (m/s)       06/06/2018  08:45   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       18/04/2019  00:00   704139                 69
   10.00 STAGE (m)               140 Discharge (m/s)       18/02/2020  03:35   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       05/02/2021  04:25   704139                 71
   10.00 STAGE (m)               140 Discharge (m/s)       07/05/2021  16:15   704139                 72
   10.00 STAGE (m)               140 Discharge (m/s)       18/02/2022  17:20   704139                 66
   10.00 STAGE (m)               140 Discharge (m/s)       04/04/2022  17:55   704139                 65
   10.00 STAGE (m)               140 Discharge (m/s)       01/06/2023  11:25   704139                 69
   24.00 Water Temp situ(C)    1006 COND. COMP. FACTOR     01/01/1900  00:00   TEMPFACT                1
 1005.00 CONDUCT. COMP.(mS/m)   1001 TDS - (mg/l)           01/01/1900  00:00   GASCOYNE                1

TIME-BASED TABLES
Var                                     Interp  Extend Back  Extend Fwrd  Date                 Value   Qual
 101.00  Stage - AHD (m)                 No       Yes         Yes         01/02/1956 00:00    -2.25500   10
 102.00  Stage - CTF (m)                 No       Yes         Yes         04/04/1956 02:20    10.10000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         30/09/1956 00:00     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         25/01/1958 00:00     9.90000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         20/03/1958 00:00     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         13/01/1963 00:00     9.90000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         21/03/1965 12:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         17/09/1965 09:36:25     9.80000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         01/10/1966 00:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         06/06/1967 12:00     9.80000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         17/06/1968 00:00    10.10000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         24/02/1969 00:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         10/06/1971 00:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         03/04/1975 00:00     9.80000    1

Department of Water and Environmental Regulation                                             HYSITREP V132  Output 22/02/2024 Page 3
                                                   HYSITREP - Site Summary Report                                                   
                                             704139 - Gascoyne River - Nine Mile Bridge                                             

 102.00  Stage - CTF (m)                 No       Yes         Yes         05/11/1975 00:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         03/10/1977 00:00     9.90000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         27/02/1978 20:00     9.90000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         19/02/1979 07:30    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         03/10/1979 00:00     9.90000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         09/04/1980 00:49:25     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         10/03/1981 04:30     9.70000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         13/02/1982 13:01     9.80000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         30/05/1982 15:00     9.70000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         04/03/1984 19:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         01/06/1992 20:40    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         16/02/1995 00:00     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         01/02/1997 00:00     9.86000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         04/08/1998 04:45    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         25/03/1999 12:00     9.86000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         11/03/2000 13:35     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         23/01/2001 08:30     9.50000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         08/03/2006 01:40    10.10000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         29/07/2007 00:17:21    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         22/02/2008 02:05     9.80000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         29/01/2009 00:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         15/12/2010 23:00     9.70000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         05/03/2015 00:00     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         05/02/2017 00:00     9.40000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         17/01/2018 04:50     9.50000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         06/06/2018 08:45     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         18/04/2019 00:00     9.50000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         18/02/2020 03:35     9.60000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         05/02/2021 04:25    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         07/05/2021 16:15     9.80000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         25/10/2021 00:00    10.00000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         18/02/2022 17:20     9.70000    1
 102.00  Stage - CTF (m)                 No       Yes         Yes         04/04/2022 17:55     9.60000    1
 103.00  STAGE - Telemetry(m)            No       Yes         Yes         01/01/2006 00:00     0.00000   10
 998.00  Catch. Area (km)               No       Yes         Yes         01/02/1956 00:00 74432.10000   10
 998.00  Catch. Area (km)               No       Yes         Yes         01/06/2011 00:00 74432.10000   10

GAUGINGS
   171 gaugings between 29/01/1961 and 23/05/2008

BENCHMARKS
Date        Bench         RGLD   Text
01/02/1956  1           16.936   
01/02/1956  2           19.191   

CROSS SECTIONS
Type                       Section    Date      Run  SectNo
  BR Bridge                   0    26/10/1929     0  000001
  BR Bridge                   0    12/11/1971     0  000002
  IN Inlets                   0    17/01/1980     0  000003
  XS Control                  1    26/06/1997     1  000004
  BR Bridge                   0    12/11/1971     0  000005
  BR Bridge                   0    12/11/1971     0  000006
  OT Other                    0    18/07/1980     0  000007
  OT Other                    0    04/10/1981     0  000008
  OT Other                    0    31/03/2004     1  000009
  OT Other                    0    31/03/2004     1  000010
  OT Other                    0    31/03/2004     1  000011
  OT Other                    0    31/03/2004     1  000012
  OT Other                    0    31/03/2004     1  000013
  OT Other                    0    31/03/2004     1  000014
  OT Other                    0    31/03/2004     1  000015

Department of Water and Environmental Regulation                                             HYSITREP V132  Output 22/02/2024 Page 4
                                                   HYSITREP - Site Summary Report                                                   
                                             704139 - Gascoyne River - Nine Mile Bridge                                             

  OT Other                    0    31/03/2004     1  000016

PERIOD OF RECORD (TS (A) ARCHIVE)
Variable                                     Start Date   End Date
  10.00 STAGE (m)                            03/02/1957 19/02/2024
  10.01 STAGE (m)                            12/02/2003 19/02/2024
  10.02 STAGE (m)                            17/09/2020 19/02/2024
  10.03 STAGE (m)                            11/01/2018 19/02/2024
  24.00 Water Temp situ(C)                  12/02/2003 14/09/2010
  80.00 Cond Comp (s/cm)                    12/02/2003 14/09/2010
  86.14 Cond uncomp in S/cm Preserved       12/02/2003 14/09/2010

PERIOD OF RECORD (DISCRETE (GW) ARCHIVE) (no data found)