Pori 1/250 virtaama

0

200

400

600

800

1000

1200

1400

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Vuorokausi

Vir

taam

a (m

3/s

)

Ka 1/250 1971-2000 Ka 1/250 2020-2049

Hydraulic simulations

• Model used– HEC-RAS 4.0b– 1D model

• Boundary conditions– Upper: Discharge hydrograph– Lower: Constant sea levels [N60+ 0.50…2.50 m]

• Water elevations to Excel (numeric results) and ArcGIS (graphic results)– Output interval: 12 hours (enough?)

Maximum difference: 0.12 m.

1.5

1.6

1.7

1.8

1.9

2

2.1

2.2

2.3

2.4

2.5

2.6

2.7

1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7

W Raumanjuovan haara [N60+m]

W L

uo

tsin

mäe

n h

aara

[N

60+

m]

Raumanjuopa

Luotsimäenhaara

1.50

2.00

2.50

3.00

3.50

0 5 10 15 20 25

Paalu

Ved

enko

rkeu

s [N

60+

m]

Q1243m³/s, yksinkertaistettu Q1243m³/s, mallinnettu Q1104m³/s, yksinkertaistettu Q1104m³/s, mallinnettu

Q950m³/s, yksinkertaistettu Q950m³/s, mallinnettu Q950m³/s, yksinkertaistettu Q707m³/s, mallinnettu

Q656m³/s, yksinkertaistettu Q656m³/s, mallinnettu

Binding RHR and water levels

0 500 1000 1500 2000 2500 3000 3500 4000

-6

-4

-2

0

2

4

6

8

10

12

Pori_TOLERATE Plan: TOLERATE_uns3/3_20-49_1.5m 7/20/2007

Station (m)

Ele

vatio

n (m

)

Legend

WS Max WS

Ground

Ineff

Bank Sta

.04 .02 .04

Flood mapping process

Initial conditions [650 m³/s, 1.50 m] Maximum water level [1243 m³/s, 1.50 m]

Suggestion for output of results• Simulations for discharge-sea level –scenarios

• HQ 250, 100, 50, 30

• N60+ 0.5, 1.0, 1.5, 2.0 m

• Water levels in main reach cross sections in every 12 hours

• Top levels of embankments included in the results

Comments, suggestions? Shall I calculate the rest of the scenariosand deliver the results to VATT?