Use of ArcGIS and Surfer for calculation of water volume in Kolíňany water reservoir

JAKUB FUSKA - DANIEL KUBINSKÝ - RÓBERT LENÁRT

Slovak University of Agriculture in Nitra

Matej Bel University, Banska Bystrica

Article outline

Main goal

– use of ArcGIS and Surfer for water reservoir volume calculation

Brief description of procedure:

- Data collection (GPS RTK survey and echosounding)

- Data processing (point-class data of surveying)

- Creation of the models (ArcMAP and Surfer)

- Use of models for water volume calculation

Introduction

Smal water reservoir (SWR) - STN 73 6824:

• Max. depth: 9m

• Max. volume 2×106 m3

• Max. Q100: 60 m3. s-1

In Slovakia approx. 200 SWR’s – mostly multifunctional (irrigation, flood protection, fish production)

Siltation – result of erosion – threat to all water reservoirs

Introduction

• Siltation - threat to all

water reservoirs

• Bottom morphology changes

• Storage capacity reduction

• Overall impact to environment

Erosion

Siltation

Transport

Studied reservoir

Water reservoir in Kolíňany (Nitra district)

- fish production, irrigation water, recipient of water treatment facility

Reservoir space

Water level

Volume

[m3]

Area

[ha]

Storage

till 180,00 106 800 11,12

Retention

180,00-180,50 60 300 13,00

Total

till 180,50 167 100 13,00

Equippment

GNSS receiver: Leica 1200+

Sonar: GPSmap 721s

Vessel: Raft boat proppeled wit electric engine

Data collection

Automatic non-contact bottom surveying - during the sail

GNSS RTK surveying (vessel position) - point each 2 m

Echosounding (depth measurement) – NMEA connection

Direct GNSS surveying - water level, dam, safety spillway

Data processing

Import of collected data to Leica GeoOffice

Calculation of the x, y, z S-JTSK coordinates in MS Excel

Data processing

Reduction of input points – distribution in 10 x 10 m grid

Data processing

Adding of shoreline bottom points and islands terrain points

Shoreline bottom elevation:

Water level – 0,35 m

Island terrain elevation:

Water level + 0,75 m

DEM creation - ArcMAP

Created models:

• Topo to Raster (2×2 m cell size, interpolation executed with “Enforce with Sink” option)

• Spline with Tension (2×2 m cell size, tension weight 0.1; approximation calculated from 12 points)

• TIN model (conforming the Delaunay triangulation rules)

DEM creation - ArcMAP

DEM creation - Surfer

Created models:

• Inverse Distance (cell size 2 m x 2 m, default settings of interpolation)

• Kriging with custom settings (cell size 2 m x 2 m, Search Ellipse Radius 1 a 2 = 40; Minimum number of data in all sectors = 5, Number of Search Sectors = 5)

• Kriging with default settings (cell size 2 m x 2 m, Search Ellipse Radius 1 a 2 = 150; Minimum number of data in all sectors = 4)

• Minimum curvature (cell size 2 m x 2 m, weight of tension 0,1)

DEM creation - Surfer

Created models:

• Natural Neighbor (raster model, cell size 2 m x 2 m, default settings of interpolation)

• Nearest Neighbor (raster model, cell size 2 m x 2 m, default settings of interpolation)

• Triangulation with Linear Interpolation (raster model, cell size 2 m x 2 m, default settings of interpolation)

DEM creation - Surfer

Inverse Distance Kriging - custom settings

Kriging - default settings Minimum curvature

DEM creation - Surfer

Natural Neighbor Nearest Neighbor

Triangulation with Linear Interpolation

Water volume calculations in ArcGIS

ArcGIS

• Raster models

Creation of water depth map

Calculation of water volume:

• Tin model:

„Surface volume“ tool

Surfer

• Water reservoir volume - calculated with „Volume“ tool

Results

Calculated value

DEM of water reservoir in ArcMAP

TIN model Spline

with tension

Topo

to Raster Average

Volume [m3] 106 545 110 014 110 014 108 858 % of average volume 97.9 101.1 101.1 100.0

Interpolation method in Surfer

Total Volume [m3] by: Trapezoidal

Rule Simpson's

Rule Simpson's 3/8 Rule

Kriging custom settings

103 045 103 048 103 048

Kriging default settings 103 079 103 082 103 083 Inverse Distance 98 049 98 053 98 054 Minimum Curvature 104 289 104 292 104 292 Natural Neighbor 102 493 102 493 102 496 Nearest Neighbor 102 494 102 494 102 493 Triangulation with linear interpolation

102 642 102 645 102 645

Results

Water volume:

• ArcMAP: 108 858 m3

• Surfer: 102 263 m3

• Operation documentation: 106 800 m3

Data of elevations probably in Adriatic height system

Conclusion

Surveyed

object

Average surveyed

elevation [m a. s. l.]

Elevation from operation

documentation [m a. s. l.]

Operating

water level 179.564 180.00

Dam crest 180.584 181.00

Safety spillway 179.513 180.00

Outlet structure 180.154 181.00

This work was supported with the following grants :

• UGA-I-11-005-08 provided by the Faculty of Natural Sciences, University of Matthias Bel in Banská Bystrica, Slovakia

• VEGA nr. 1/0027/12 „Development and validation of indirect assessment of anthropogenic immission load”,

• APVV nr. 0274-10 "Quantification of input data influence on correctness of outputs of dispersion simulation models for surface water„

• VEGA 1/0456/14 “Management of the Soil Moisture Regime as a Tool for Climate Change Adaptation”.

Acknowledgments

Thank You for Your Attention

Contact: Jakub Fuska

Department of Landscape Engineering, Slovak University of Agriculture

fuska.jakub@gmail.com

Daniel Kubinský

Department of Biology and Ecology, Matej Bel University

posta@dkubinsky.sk