OpenDeltaDelta State

The map: every government contract in Delta State

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About this map

Three ways of colouring the same 25 shapes, and they disagree — which is the reason all three are here rather than one.

Share against share

Each area's share of all the contract value, set against its share of the people. 1.0 is an area holding exactly the share its population would account for. Okpe is at 8.61. Our calculation

Overstates LGAs hosting corridor infrastructure that serves several LGAs, and inherits the uncertainty of a population estimate from a 2006 census. It is a comparison of shares, not money anybody received.

Total contract value

The published sums, added up and attributed to the areas named on each contract. No adjustment for size, so the large areas lead — which is what makes the first measure worth having. Official record

Number of projects

A count, not a sum. An area with many small contracts and one with a single enormous one look nothing alike here, and identical on value. Official record

Places named in contract addresses

A ward or settlement list for Delta State is not yet published, so the places on this map are OpenStreetMap's and GRID3's, merged where they are the same place — the only lists of inhabited places in the state. Setting them beside the register shows which places are named in contract addresses.

81 of 2551 mapped places in Delta are named in a contract address — 3.2%. Open any area on the map to see which ones. Our calculation
25 of Delta's 25 areas have mapped places, and every one of those has at least one place a contract address names — none is entirely absent from the register. That says the register reaches every area by name somewhere, not that it reaches every place. Our calculation
What this figure is, and is not It is not a count of places that received nothing. A road contract named "Egodo–Ogbeinbene Road" serves places it does not list, and a great many addresses name a school or a hospital rather than a settlement — so more than 81 places have had money spent in them. The match is strict to avoid overcounting. 2470 of 2551 mapped communities are not named in a contract address. Not a count of places that received nothing. A road contract serves places it does not name, and many addresses name an institution rather than a settlement, so the true figure is higher than the one shown. It measures how many places are named in a contract address. The settlement list is OpenStreetMap's and GRID3's, not the state's — a state list is not yet published — so a place not yet mapped is missing from both sides.

The shapes, and where they came from

WhatSourceClassCaution
Boundaries of the 25 LGAs geoBoundaries ADM2 (Nigeria) · geoboundaries.org Read from a document CC BY 4.0. Simplified to about 175 m, so a boundary here is right to about the width of a street, not a fence line.
Project coordinates and place names Delta State Public Procurement Commission register Official record The point is where the record says the project is. Coordinates as published; not independently checked on site.
Rivers, roads and town labels Carto Positron, over OpenStreetMap Read from a document A third-party tile service, and the only bytes here from another server. It can be switched off; the map works without it, but the town labels go with it.
Towns, villages and hamlets OpenStreetMap contributors · openstreetmap.org; GRID3, from the Office of the Surveyor-General of the Federation, UN OCHA and its own teams · data.grid3.org Read from a document ODbL 1.0 and Creative Commons. 2551 inhabited places inside the 25 LGA boundaries, merged where both lists hold the same place. Neither is an official register — Delta State publishes no settlement list of its own — and GRID3's points were mostly collected in 2017–2019, so a place not yet mapped is missing and a newer one may be. Below the LGA, GRID3's 268 ward boundaries are drawn as you zoom in. Read from a document

The same thing, as a table

The map needs WebGL, a screen worth panning and about a megabyte of library. This is every figure it draws, in a form that needs none of those.

Local government areaProjects ValueShare of the money Share of the people
Okpe 73 ₦285.12bn 26.9% 3.1% Open on the map
Oshimili South 61 ₦93.25bn 8.8% 3.6% Open on the map
Ika South 14 ₦81.10bn 7.6% 4.1% Open on the map
Uvwie 25 ₦78.39bn 7.4% 4.6% Open on the map
Ndokwa East 11 ₦39.57bn 3.7% 2.5% Open on the map
Oshimili North 14 ₦40.15bn 3.8% 2.9% Open on the map
Warri South 42 ₦85.61bn 8.1% 7.6% Open on the map
Warri South West 14 ₦29.86bn 2.8% 2.8% Open on the map
Ethiope East 15 ₦47.32bn 4.5% 4.9% Open on the map
Burutu 15 ₦47.78bn 4.5% 5.1% Open on the map
Aniocha North 19 ₦22.97bn 2.2% 2.5% Open on the map
Udu 12 ₦27.12bn 2.6% 3.5% Open on the map
Ndokwa West 11 ₦23.05bn 2.2% 3.6% Open on the map
Ika North East 22 ₦21.43bn 2.0% 4.4% Open on the map
Ethiope West 15 ₦19.27bn 1.8% 4.9% Open on the map
Isoko South 13 ₦22.23bn 2.1% 5.7% Open on the map
Sapele 13 ₦16.10bn 1.5% 4.2% Open on the map
Patani 5 ₦5.85bn 0.6% 1.6% Open on the map
Ughelli South 11 ₦18.68bn 1.8% 5.2% Open on the map
Isoko North 12 ₦11.74bn 1.1% 3.5% Open on the map
Ughelli North 24 ₦22.37bn 2.1% 7.8% Open on the map
Warri North 4 ₦8.21bn 0.8% 3.3% Open on the map
Aniocha South 7 ₦7.90bn 0.7% 3.5% Open on the map
Bomadi 2 ₦4.59bn 0.4% 2.1% Open on the map
Ukwuani 4 ₦479.3m 0.0% 2.9% Open on the map

What is not on this map

Listed rather than left off. An empty map reads as a place where nothing happens.

Not yet published

What a school achieves. Whether a clinic is open, staffed or stocked. Whether a road is passable. Whether a borehole still works. What food costs in a named market. Every one of them a status rather than a place.

Published, and now drawn

GRID3 publishes 3,431 schools, 1,405 health facilities, 347 markets and 268 ward boundaries for Delta, publicly and under Creative Commons. All four are on the map, switched off until you ask for them. This platform recorded for months that no school dataset and no sub-LGA boundary is published for Delta State, which was wrong.

Locations, and nothing more. Almost none of those schools carries an enrolment: the GRID3 schema has a column for it and 3,427 of the 3,431 Delta rows are blank. OpenStreetMap's 905 major roads and 2,170 rivers, canals and creeks are drawn too — where they are, not whether a road is passable or a creek navigable.

On the map, not yet checked

Every project point. The coordinate comes from the register. Not yet independently checked; 54 of the largest have satellite comparisons. Not yet published

Projects as GeoJSON Boundaries and figures as GeoJSON Everything else we hold