Hydraulic model verification by optical remotesensing

J.Chormaski,D. Mirosaw-witek, T. Okruszko

River Flood modelingin Wetlands

River flood and his ecological impact in wetland (Flood Pulse concept)

Floodplain - a water storage reservoir

Analysis of the flood duration and spatial extent of flood determination is very important (specially in the mixed-source wetlands)

Application of hydraulic model helps in resolving above problems

Difficulty in model verification

The Biebrza LowerBasin, a researcharea

Ek

Grajewo

Augus tw

Lipsk

Olecko

Prostki

LipowiecRutki

Gonidz

Raczki

Rajgrd

Suchowola

Bargw

Nowy Dwr

Sztabin

Wsosz

Filipw

Radziw

Kubra

Gski

Szczuczyn

awsk

Stare Juchy

KorycinKrzywa

Janw

Dbrowa Biaostocka

Wieliczki

Szorce

Sucz

Pokono

Cimochy

Topilwka

Grabnik

Nowinka

Zabiele

Biaaszewo

Zubole

JarzbnaNowa Wie Ecka

Oracze

Kolnica

Ruda

Ostrowie

Beda

Sulewo

Klimaszewnica

Gie

Bagny

JasionowkaGlinki

Piecki

Przytuy

Chilmony

Biaousy

Pluty

Siedliska

Siderka

Jaziewo

Nowa Wie

Teolin

Wysokie

Jawka

Dryga

Sajzy

Dugie

Kramkwka

Jawiy

Moki

Siwki

Kulesze

Studzieniczna

Drestwo

Regiel

Liski

Burzyn

Kijewo

Sidra

Kty

Miecze

Zdroje

Przystawka

Somianka

Orlikowo

Romanty

PisanicaBiaobrzegi

Chojnowo

Klewianka

Mayszwka

Mcichy

Czerwonka

Niemczyn

Gorwko

Brzozowa

Guty

Bobrwka

Kosiy

Jaminy

Siekierka

Milewo

Rudawka

Bierniki

Stoczek

OsowiecZagrze

Iwaki

Straduny

Boczki

SkindzierzMikicin

Kamionka

Orzechowo

Kurianka

Zalesie

Morgi

Kopijki

Kalinowo

Biaosuknia

Kdzierowo Makowiany

Reszkowce

Mocarze

Kukowo

Chechy

Stone

Kamienica

Wierzbowo

Wewo

Poom

Modzele

Sokki

Lewki

Reszki

Brzeno

Sieruciowce

Plewki

Niedwiedzkie

Wlka

Kaczyny

Lipowo

Dudki

Sokoy

Kozwka

Dorsze

Lebiedzin

Wronki

Bzury

Milewskie

Ostryk

Nieciki

arnowo I

Pawwka

Pruska-Wielka

Suray

Supy

Rydzewo

Kopciwka

Brzeziny

Witynie

Budno

ubianka

Pisanki

Nieckowo

Bobry

Kamie

Barszcze

Popowo

Kapice

Czrny Stok

Wojdy

Jasionwka

Kurki

Karpowicze

Monkinie

azarze

Rakowicze

Grzebienie

ydy

Nieszki

WroceMoniuszki

Mazuchwka

Dolistowo Stare

Dobki

Miusze

Chechy

Mrozy

Sypitki

Powitne

Szymany

Kile

Ciemnoszyje

Ginie

Krzywe

Dogi

MasieOkrasin

Goubie

Krynica

Borawskie

Radzie

Wyudy

Bkowo

Poganica

abtnik

Koniuszki

Bierwicha

Kiliany

Koziki

Pociczno

Skaje

Kroszewo

Kurejewa

azy

Piaski

Gryzy

Grady Mae

Kizielany

Wrotki

PGR Siejnik

Wosty

Sieburczyn

Biodry

Maowista

Sniczany

Szeski

Dolistowo Nowe

Tajno-PodjeziorneDugosze

Boguszki

Winiowo Eckie

Zatyki

Ciemianka

Krupin

Markowskie

Mroczki

Barany

Jagowo

Rutkowskie

Wydminy

Starowiany

Osowa

Woszczele

Bieniowce

Sulejki

Synkowce

Golubki

Sobieski

Romanowka

Dybowo

Wilamwka

Bartosze

Orzechwko

odzie

Dyba

Kacprowo

Cimanie

Gawliki W ielkie

Przykopka

Wierciochy

Kopiec

Kurkowo

Kiersnwka

Maciesze

Buczki

Kropiwno

niepie

DunajekJaki

Wojewodzin

RamotyBrody

Chwaszczewo

Loje-Awissa

Krzecze

Orowo

Wwka

Hruskie

Rudka

Jasionowo

Borzymy

Malinwka

Zanie

Sedranki

Tajno-anowe

Mierucie

Kolonia Przytuy

Krasne

Wierciszewo

Borki

Popiowka

Goubka

Orzechwka

Szaciwka

Zakrzewo

Biernatki

Szczecinki

Szumowo

Bartki

Sonia

Solistwka

Sojczyn-Borowy

Przechody

Bukowo

Polkowo

Jemieliste

Mone

Horodnianka

Gboczyzna

Gradzkie

Monety

Laski Mae

Okl

Kossaki

Nowa Chodorowka

Przestrzele

Szwak

Kumiaka

Stary Rogoyn

Makinie

Baamutowo

Czerwonki

Dugochorzele

Suszalewo

Trzaski

Olszewo

Stcze

PGR Garba

Cibory

PGR Biebrza

Mieczki Czarne

Nowokolno

Brzozwka-Ziemiaska

Zawady-Eckie

Wesoowo

Czarnwla

Romejki

Jeziorowskie

ubianne

Podnowinka

Rabalina

Kamionka Stara

Racibory-Jurgi

Stacze

Tarachy

Flesze-Raskie

Ponarlica

Szczebra

Makosieje

Taciewo

Koziniec

Grabowe Grdy

Niemcowizna

Lipiskie

Stara Chmielwka

Rutkowszczyzna

PGR Drozdowo

Sadowina

Wlka Piaseczna

Babki-Gseckie

Cicha Wlka

Nowe Krzywe

Sojczynek-Nowa Wie

Rosochate

Siedlisko

BurzynBurzyn

Osowiec

foresttown and village

gauge station

LEGEND

N

EW

S

roadriver

0 5 10 Kilometers

March 2000 spring flood

Water level observed in Burzyngauge during a flood in 2000

March 2000 spring flood

Hydraulic model development

River channel shape Floodplain topography Hydraulic model

Geometry of thevalley. Cross-sections

The river channel - Manual sonding

A part of the valley located close to the river channel -Topography measurements

The rest of the valley -captured from DTM

DTM of the valley

Data: contour and point elevation

data source topographic maps scale of 1: 25 000;

Measured elevation cross-sections in the river valley;

Interpolation: TOPOGRIDTOOL an ArcInfo

routine existing natural hydrography

network used for sinks removal and to enforce known drainage patterns during interpolation;

Spatial resolution of DTM - 25 meters

DTM of the LowerBiebrza Basin

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measurements DTM

Biebrza River

Kosdka

Quality of the DTM

Model verified by two measured valley cross-section Levelling in 50 meters (90

points in two cross-sections) Verification of DTM (RMS

Error = 0,35m)

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Flood extend calculated by use of hydraulic model

HydraulicModel verification

The Remote sensingmethod of the calculatedflood extent verification

Remote sensing

The Landsat TM images were used Low price image captured in the

same time as river flood peak

Advantage: good registration of wetness and water during leaf-out period

Image processing Rectification, contrast

matching and image transformations (PCA, NDVI)

Supervised classification Training fields (tf)

determination Validation of tf Classification Verification

Reclassificationa) Dry against wet classesb) Open water and deep

inundated (more then 0.5 m) against rest of wet and dry classes

Image re-classification (a)

Image re-classification (b)

Wetland watersources

Chemical properties as an indicator of the source of water

The measurements of EC used for water source detection

The river water, groundwater and snow melt water are separated from the by river flooded area

Water chemistry and visualinterpretation of sattelite images

Discussion

Conclusion

Remote sensing methods cannot be used for hydraulic model verification in wetlands in fully automatic way

These analysis give not sufficient results in mixed-source wetlands

Including a water chemistry analysis could help indetermination of the river flooded from rest of inundated valley