3rd IMPACT WORKSHOPBrembo-Adda test caseFabrizio Savi, University of Rome La Sapienza

On 25-28 November due to heavy rainfalls in Alpine Region (Northern Italy) a significant flood propagated along Adda river and inundated a wide portion of the riverside and the city of Lodi

Description of the hydrographic networkL=131 kmL=50 kmL=98 km

Stream gauging stations

For each gauging stationSemi-hourly water stages hydrographsRating curve are available

Maximum water levels during floodwere also measured in 117 points

Flooded areas by Adda river were also contoured

Land surveys

Adda

Brembo

Serio

L (km)

131

50

98

N

313

233

288

D (m)

418

215

340

Nm

35

67

83

S0 (m/km)

1.3

7.0

4.5

B (m)

Min

46

23

35

Average

667

174

330

Max

3257

1501

1441

Grafico1

68.33863.5864.93371.953

66.13664.65368.00371.949

64.93364.87369.38671.972

64.26368.00569.5972.02

63.616869.38671.973

63.4864.86368.003

62.6164.65368

62.5663.5169.386

62.6669.59

62.66762.5769.386

62.98364.65368.005

63.1664.87368

63.46568.00569.386

63.876869.59

63.75864.86369.386

63.70164.65368.005

63.85262.6668

63.90469.386

63.76262.5769.59

63.40164.65369.386

62.8764.87368.005

62.67468.00568

62.6726869.386

63.05964.86369.59

63.09964.65369.386

62.18363.0668.005

62.09168

62.30963.8669.386

62.70164.65369.59

62.68864.87369.386

62.69668.00568.005

62.8996868

63.37464.86369.386

63.4664.65369.59

63.1863.8669.386

62.84568.005

63.20963.1868

62.9164.65369.386

63.18564.87369.59

63.0668.00569.386

63.2836868.005

63.47764.86368

63.39564.65369.386

63.68462.6669.59

63.86569.386

64.24362.3168.005

65.57764.65365.573

66.88564.873

68.31768.005

68

64.863

64.653

62.04

62.71

64.653

64.873

68.005

68

64.863

64.653

63.31

63.11

64.653

64.873

68.005

68

64.863

64.653

63.25

Q. TERRENO

Z1

Z2

Z3

PROGRESSIVA (m)

QUOTA (m s.m.)

Foglio1

RilievoADDA200220022/27/03AdBPOATI MWH

Corso d'acqua001001ADDA

Progressiva chilometrica232.310394ORTOFOTO 1:10000

Caposaldo sezione nomeA103DX

Coord. Caposaldo (UTM32-WGS84)539817.9115018449.787

Coord. Caposaldo (UTM32-ED50)

Coord. Intersezione Asse Fluviale (WGS 84-UTM 32)539847.2245018513.892

Coord. Intersezione Asse Fluviale (UTM32-ED50)

Coord. Asse Spalle Manufatto (SX-DX)(WGS 84-UTM 32)539910.2485018600.120539805.9765018461.274

Coord. Asse Spalle Manufatto (SX-DX) (UTM32-ED50)

Sistema Riferimento Rilievo ManufattoUTM-WGSm s.m.

StrumentazioneGPSSTAZ.TOTALEECOSCAND.

Toll. altimetrica punti (cm) 30

Larghezza impalcato (m)9.60

Angolo rispetto direzione principale di deflusso ()106.177

Larghezza plinto (m)4.20

Forma plintoCOMPOSTA

Larghezza pila (m)2.60

Forma pilaCOMPOSTA

Dati RilievoSezioneSubCOD PPROGR.Q. TERRENOCOD PPROGR.Z1COD PPROGR.Z2COD PPROGR.Z3

10340.00068.3384219.97063.580405.77564.933490.00071.953

44.05366.1364319.97064.653415.77568.0034923.43071.949

45.77564.9334420.77064.873468.40069.3864925.84071.972

410.00064.2634520.77068.0054612.55069.5901177.38072.020

3119.97063.6104523.37068.0004616.61069.38649177.40071.973

3124.17063.4804423.37064.8634520.77068.003

3139.00062.6104324.17064.6534523.37068.000

3143.21062.5604224.17063.5104627.40069.386

3158.04062.6604631.59069.590

3158.16662.6674239.00062.5704635.74069.386

3161.78962.9834339.00064.6534539.81068.005

3165.52163.1604439.81064.8734542.41068.000

3168.96463.4654539.81068.0054646.43069.386

3172.66463.8704542.41068.0004650.62069.590

3176.44763.7584442.41064.8634654.77069.386

3179.78363.7014343.21064.6534558.84068.005

3183.57063.8524243.21062.6604561.44068.000

3187.06563.9044665.60069.386

3190.64563.7624258.04062.5704669.76069.590

3194.63263.4014358.04064.6534673.92069.386

3197.55662.8704458.84064.8734578.07068.005

31100.53262.6744558.84068.0054580.67068.000

31103.56362.6724561.44068.0004684.72069.386

31107.02263.0594461.44064.8634688.88069.590

31111.14663.0994362.24064.6534693.04069.386

31115.12062.1834262.24063.0604597.10068.005

31118.80462.0914599.70068.000

31122.25562.3094277.07063.86046103.63069.386

31125.41962.7014377.07064.65346107.79069.590

31129.23862.6884477.87064.87346111.84069.386

31132.73762.6964578.07068.00545116.00068.005

31135.72862.8994580.67068.00045118.60068.000

31138.62663.3744480.67064.86346122.22069.386

31141.14963.4604381.47064.65346126.38069.590

31144.57863.1804281.47063.86046130.74069.386

31147.87262.84545134.90068.005

31151.14863.2094296.30063.18045137.50068.000

31151.68562.9104396.30064.65346142.12569.386

31153.98363.1854497.10064.87346146.28069.590

31157.75763.0604597.10068.00546150.34069.386

31159.74563.2834599.70068.00045154.50068.005

31161.75363.4774499.70064.86345157.10068.000

31162.03863.39543100.50064.65346161.26069.386

31164.56163.68442100.50062.66046165.31069.590

31164.67763.86546169.47569.386

4168.80064.24342115.00062.31041173.63568.005

4173.20065.57743115.00064.65340173.63065.573

4174.90066.88544115.80064.873

4177.40068.31745116.00068.005

45118.60068.000

44118.60064.863

43119.40064.653

42119.40062.040

42133.90062.710

43133.90064.653

44134.70064.873

45134.90068.005

45137.50068.000

44137.50064.863

43138.30064.653

42138.30063.310

42153.50063.110

43153.50064.653

44154.30064.873

45154.50068.005

45157.10068.000

44157.10064.863

43157.90064.653

42157.90063.250

Foglio1

Q. TERRENO

Z1

Z2

Z3

PROGRESSIVA (m)

QUOTA (m s.m.)

Foglio2

Foglio3

Grafico2

67.6

67.29

66.58

66.01

64.72

64.02

63.85

64.05

64.56

66.64

66.93

64.81

63.97

63.78

63.99

64.38

64.51

64.75

66.6

66.7

69.41

69.35

69.2260.28

69.3860.28

69.38

69.413.69

Q. TERRENO

Z1

Z2

PROGRESSIVA (m)

QUOTA (m s.m.)

Foglio1

RilievoADDA200220022/27/03AdBPOATI MWH

Corso d'acqua001001ADDA

Progressiva chilometrica232.310394ORTOFOTO 1:10000

Caposaldo sezione nomeA103DX

Coord. Caposaldo (UTM32-WGS84)539817.9115018449.787

Coord. Caposaldo (UTM32-ED50)

Coord. Intersezione Asse Fluviale (WGS 84-UTM 32)539847.2245018513.892

Coord. Intersezione Asse Fluviale (UTM32-ED50)

Coord. Asse Spalle Manufatto (SX-DX)(WGS 84-UTM 32)539910.2485018600.120539805.9765018461.274

Coord. Asse Spalle Manufatto (SX-DX) (UTM32-ED50)

Sistema Riferimento Rilievo ManufattoUTM-WGSm s.m.

StrumentazioneGPSSTAZ.TOTALEECOSCAND.

Toll. altimetrica punti (cm) 30

Larghezza impalcato (m)9.60

Angolo rispetto direzione principale di deflusso ()106.177

Larghezza plinto (m)4.20

Forma plintoCOMPOSTA

Larghezza pila (m)2.60

Forma pilaCOMPOSTA

Dati RilievoSezioneSubCOD PPROGR.Q. TERRENOCOD PPROGR.Z1COD PPROGR.Z2COD PPROGR.Z3

10340.00068.3384219.97063.580405.77564.933490.00071.953

44.05366.1364319.97064.653415.77568.0034923.43071.949

45.77564.9334420.77064.873468.40069.3864925.84071.972

410.00064.2634520.77068.0054612.55069.5901177.38072.020

3119.97063.6104523.37068.0004616.61069.38649177.40071.973

3124.17063.4804423.37064.8634520.77068.003

3139.00062.6104324.17064.6534523.37068.000

3143.21062.5604224.17063.5104627.40069.386

3158.04062.6604631.59069.590

3158.16662.6674239.00062.5704635.74069.386

3161.78962.9834339.00064.6534539.81068.005

3165.52163.1604439.81064.8734542.41068.000

3168.96463.4654539.81068.0054646.43069.386

3172.66463.8704542.41068.0004650.62069.590

3176.44763.7584442.41064.8634654.77069.386

3179.78363.7014343.21064.6534558.84068.005

3183.57063.8524243.21062.6604561.44068.000

3187.06563.9044665.60069.386

3190.64563.7624258.04062.5704669.76069.590

3194.63263.4014358.04064.6534673.92069.386

3197.55662.8704458.84064.8734578.07068.005

31100.53262.6744558.84068.0054580.67068.000

31103.56362.6724561.44068.0004684.72069.386

31107.02263.0594461.44064.8634688.88069.590

31111.14663.0994362.24064.6534693.04069.386

31115.12062.1834262.24063.0604597.10068.005

31118.80462.0914599.70068.000

31122.25562.3094277.07063.86046103.63069.386

31125.41962.7014377.07064.65346107.79069.590

31129.23862.6884477.87064.87346111.84069.386

31132.73762.6964578.07068.00545116.00068.005

31135.72862.8994580.67068.00045118.60068.000

31138.62663.3744480.67064.86346122.22069.386

31141.14963.4604381.47064.65346126.38069.590

31144.57863.1804281.47063.86046130.74069.386

31147.87262.84545134.90068.005

31151.14863.2094296.30063.18045137.50068.000

31151.68562.9104396.30064.65346142.12569.386

31153.98363.1854497.10064.87346146.28069.590

31157.75763.0604597.10068.00546150.34069.386

31159.74563.2834599.70068.00045154.50068.005

31161.75363.4774499.70064.86345157.10068.000

31162.03863.39543100.50064.65346161.26069.386

31164.56163.68442100.50062.66046165.31069.590

31164.67763.86546169.47569.386

4168.80064.24342115.00062.31041173.63568.005

4173.20065.57743115.00064.65340173.63065.573

4174.90066.88544115.80064.873

4177.40068.31745116.00068.005

45118.60068.000

44118.60064.863

43119.40064.653

42119.40062.040

42133.90062.710

43133.90064.653

44134.70064.873

45134.90068.005

45137.50068.000

44137.50064.863

43138.30064.653

42138.30063.310

42153.50063.110

43153.50064.653

44154.30064.873

45154.50068.005

45157.10068.000

44157.10064.863

43157.90064.653

42157.90063.250

Foglio1

Q. TERRENO

Z1

Z2

Z3

PROGRESSIVA (m)

QUOTA (m s.m.)

Foglio2

Foglio3

The values of the Manning roughness coefficient can be estimated on the basis:maps of the soil use in the floodplainmean particle size of the river bed materialphotographs of revetments

ConclusionsInput data:Discharge hydrographs at the upstream sections of hydrographic network (XLS format)Stages hydrograph at the downstream section of hydrographic network (XLS format)Cross sections (including Manning roughness coefficient) (XLS-ASCII format) DTM of the valleys (DWG format) Data to verify the model:Stages hydrograph at intermediate section (XLS)Maximum observed water stages along the water courses (XLS format)Extension of the inundated areas (along Adda river) (DWG format)