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ARPA LOMBARDIA RIVER GAUGING NETWORK: A GREAT DAILY EFFORTMatteo Cislaghi, Michele Calabrese, Leonardo Condemi, Sara Di Priolo, Paola Parravicini, Chiara Rondanini, Michele Russo, Orietta Cazzuli, Mauro Mussin, and Roberto Serra
Hydrometeo Service, ARPA della Lombardia, Milan, Italy ([email protected])
European Geosciences Union
General Assembly
Vienna 23–28 April 2017
COLLECTING WATER LEVEL AND DISCHARGE
LOMBARDY: A REGION OF WATER!
COMPLEX OROGRAPHY
Alps
Hill zone
Po river plain
COMPLEX HYDROGRAPHY
Mountain rivers
Big regulated lakes
Plain rivers
Artificial channels
WATER USED BY
Ecosystem
Drinking
Agriculture
Industry
Energy production
Tourism
Navigation
Discharge and hydrometric levels at
2006-2016: 10 YEARS OF HARD WORK
30% MAJOR REVISION OF THE HYDRO-NETWORK
a) Mountain catchments
b) Inlet and outlet from regulated lakes
c) Lakes level and storage
d) Confluences
e) Flooding areas or sites
f) Historical sites (climate)
WATER RESOURCES MANAGEMENT AND FLOOD
MONITORING REQUIRE TO KNOW
In the last 10 years ARPA performed a major revision of the river gauging network
Around 30% of the network was revised, many stations were closed and other installed
SITE SELECTION CRITERIA
1. What do I want know/measure?
2. Is it there?
3. Can I measure it?
4. Can I transmit the data?
5. Can I maintain the station and the
site?
Hydrometer
Stage
WATER LEVEL GAUGE AND
RATING CURVE
0
20
40
60
80
100
120
140
160
180
200
0 0,2 0,4 0,6 0,8 1 1,2 1,4 1,6 1,8
Q (
mc/s
ec
)
livello (m)
BREMBO A CAMERATA CORNELLO
Side-looking Doppler profiler
Hydropower plant
-0,7
-0,6
-0,5
-0,4
-0,3
-0,2
-0,1
0
0
10
20
30
40
50
60
70
20/01/2015 24/01/2015 28/01/2015 01/02/2015
h (m
)
Q (m
3 /s)
Montodine Q (m^3/s)
Montodine h (m)
VELOCITY INDEX METHOD FOR
NATURAL OR ANTHROPIC
BACKFLOWS
STATION INSTALLATION STEPS
(up to 2.5 years)
1. Project elaboration
2. Fund raising
3. Instrument purchasing
4. Authorisations by authorities
(many….)
5. Instrument installation
DOUBLE SYSTEM DATA TRANSMISSION:
DATA GARANTEED EVERY 10 MINUTES
DEDICATED UHF RADIO NETWORK
Discharge is evaluated by
water level only. The rating
curve exists and is estimated.
Discharge is evaluated by
water level and velocity.
Artificial changes in water
level do not affect the
discharge estimation.
GPRS MOBILE NETWORK
This double approach ensures a very robust transmission and it
allows ARPA to collect and publish data every 10 minutes.
REAL TIME FREE PUBLICATION OF DATA
http://Idro.arpalombardia.it0
1000
2000
3000
4000
5000
6000
Media giornaliera pagine caricate
PEOPLE AT WORK EVERY DAY SURFACE WATER, A RESOURCE AND A
DANGER TO BE MONITORED: HOW?
ADOPTED TECHNOLOGY
NETWORK CORRECT WORKING CHECK
SPOT DISCHARGE MEASURES
DATA DOWLOADS BY END USERS
Daily, an operator has to follow a check list
a) Data are available on web
b) Data are available on the Data Base
c) Data are transmitted to Civil Protection Agency
d) Data values are reliable
If something does not work the maintenance service is requested.
When the problem is fixed
the request is closed
Spot discharge measures are performed on every site in every hydrological condition,
at least twice a year, if nothing changes. To recalibrate a rating curve, even more than
10 measures are required.
The number of people
connecting to our web site is
increasing over the years. This
confirms the quality of our
work and pushes us to
continue improving our
services
New installation
Closed site
Kept site
