Procurement of Riverbed Mapping 2024

The main purpose of the procurement is to gain new bathymetric riverbed data for rivers affected by the 2023 extreme weather “Hans”. The data will be used in projects working with physical measures towards flood and erosion, and to make better hydraulic models.We estimate the value of the procurement to be in the region of NOK 20-35 million, which includes the options.A complete description of the scope of the procurement can be found in the Specification of Requirements appended as Annex 6.1.This competitive tender has been divided into 10 subprojects; see the list below for details of the subprojects and the river stretches. Each subproject defines whether we only require use of Airborne LiDAR Bathymetry (ALB) or whether we also require the use of multi-beam echosounder (MBES) to fill gaps.

The map available in Annex 6.2 shows in more detail which areas must be covered.Riverbed mapping of rivers in Ringerike municipalityA. Main project: ALB, ALS and MBES of c. 63 km stretches of the rivers Begna, Randselva, Storelva in RingerikeB. Option: ALB, ALS and MBES of c. 10 km stretch of the river SognaRiverbed mapping of the rivers Etna and Dokka in Etnedal and Nordre Land municipalityA. Main project: ALB and ALS of c. 23 km stretches of the rivers Etna and Dokka (in total c. 23 km stretch of river)B. Option: ALB and ALS of c. 12,5 km stretch of the river EtnaRiverbed mapping of the river Gudbransdalslågen in Innlandet CountyA. Main project: ALB, ALS and MBES of c. 100 km stretches, from Sel to lake Losna.B. Option: ALB and ALS of c. 30 km stretch of the river OttaC. Option: ALB, ALS and MBES of c. 8 km stretch of the river Gudbransdalslågen, at Tretten, in Øyer MunicipalityRiverbed mapping of rivers in Lillehammer and Gausdal municipalitiesA. Main project: ALB and ALS of c. 87 km stretches of the rivers Gausa, Jøra and Dørja.B. Option: ALB, ALS and MBES of c. 15 km stretch of the river Gudbransdalslågen, from Hunderfossen to Lillehammer.Riverbed mapping of rivers in the Drammen waterways and in Lier, Buskerud CountyA. Main project: ALB, ALS and MBES of c. 120 km stretches of the rivers Drammenselva, Simoa and Snarumselva, including som tributaries. MBES is only needed for the main rivers Drammenselva, Simoa and Snarumselva.B. Option: ALB and ALS of c. 22 km stretch of the river Lierelva, in Lier municipalityALB, ALS and MBES of c. 75 km stretches of the rivers Glomma, Vorma, Rømua and Leira, in Lillestrøm and Nes municipalitiesOption: ALB, ALS and MBES of c. 24 km stretch of the lower part of the river Glomma, in Sarpsborg and Fredrikstad municipalitiesOption: ALB and ALS of c. 16 km stretches of the rivers Glomma and Folla, in Alvdal municipalityOption: ALB and ALS of c. 51 km stretch of the river Begna, in Ringerike and Sør-Aurdal municipalitiesOption: ALB and ALS of c. 28 km stretch of the river Rena, in Rendalen municipalityThe subprojects 1B, 2B, 3B, 3C, 4B, 5B, 7, 8, 9 and 10 are options.