Drainage in St. Mary Parish

Puddles, ditches, stormwater and washed-out shoulders Local context for St. Mary Parish, Louisiana.

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8related places in the database
~ 221 miStormwater segments - model
~ 43Ditches and channels - model

Drainage summary

St. Mary Parish, Louisiana. Population: 46,799. Land area: 558.5 sq mi. Puddles, ditches, stormwater and washed-out shoulders.

Recorded local data

Population46,799Source: census_popest_county. Population year: 2024.
Land area558.5 sq miSource: census_gazetteer. Geography year: 2023. Water area is excluded.

Derived from recorded data

Residents per square mile83.8Population / land area. Population and geography may refer to different years.

Model scenario

Stormwater segments~ 221 miScenario: (land area in square miles x 2.2 (assumed road miles per square mile)) x 0.18. Coefficients are assumptions, not locally measured rates. Not a verified object count.
Ditches and channels~ 43Scenario: (square root of land area in square miles) x 1.8. Coefficients are assumptions, not locally measured rates. Not a verified object count.
Road shoulders~ 147 miScenario: (land area in square miles x 2.2 (assumed road miles per square mile)) x 0.12. Coefficients are assumptions, not locally measured rates. Not a verified object count.

Model values are scenarios, not an inventory or evidence that a service exists. Queues, applications, incidents, service users and unsafe homes are not inferred from population. Missing data does not mean zero.

Message topics

service issuemaintenanceaccessibilityschedule or timingclarification

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Other counties in Louisiana

Drainage in other county pages in this state.

East Baton Rouge Parishpopulation 453,022Jefferson Parishpopulation 427,253Orleans Parishpopulation 362,701St. Tammany Parishpopulation 277,615Lafayette Parishpopulation 254,241
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Caddo Parishpopulation 224,893Calcasieu Parishpopulation 206,861Ouachita Parishpopulation 157,874Livingston Parishpopulation 152,886Tangipahoa Parishpopulation 139,823Ascension Parishpopulation 133,534Bossier Parishpopulation 131,102Rapides Parishpopulation 125,899Terrebonne Parishpopulation 103,864Lafourche Parishpopulation 95,342St. Landry Parishpopulation 80,869Iberia Parishpopulation 67,540Vermilion Parishpopulation 57,641Acadia Parishpopulation 56,604St. Martin Parishpopulation 51,218St. Charles Parishpopulation 50,400Lincoln Parishpopulation 48,243Vernon Parishpopulation 45,819Washington Parishpopulation 45,090St. Bernard Parishpopulation 44,783St. John the Baptist Parishpopulation 39,694Avoyelles Parishpopulation 38,373Beauregard Parishpopulation 36,695Natchitoches Parishpopulation 35,982Webster Parishpopulation 35,184Evangeline Parishpopulation 31,745Jefferson Davis Parishpopulation 31,436Iberville Parishpopulation 29,766West Baton Rouge Parishpopulation 28,425De Soto Parishpopulation 27,274Morehouse Parishpopulation 23,787Allen Parishpopulation 22,501Plaquemines Parishpopulation 22,289Grant Parishpopulation 22,109Sabine Parishpopulation 21,746Union Parishpopulation 20,617Assumption Parishpopulation 20,050Pointe Coupee Parishpopulation 19,845Richland Parishpopulation 19,643East Feliciana Parishpopulation 19,112St. James Parishpopulation 19,110Franklin Parishpopulation 19,107Concordia Parishpopulation 17,797West Feliciana Parishpopulation 15,155Jackson Parishpopulation 14,797LaSalle Parishpopulation 14,702Claiborne Parishpopulation 13,537Winn Parishpopulation 13,405Bienville Parishpopulation 12,412St. Helena Parishpopulation 10,857Caldwell Parishpopulation 9,393West Carroll Parishpopulation 9,254Madison Parishpopulation 9,093Catahoula Parishpopulation 8,280Red River Parishpopulation 7,238

Major cities in Louisiana

Drainage in major city pages in this state.

New OrleansCommunity - population 362,701Baton RougeCommunity - population 220,907ShreveportCommunity - population 176,578LafayetteCommunity - population 122,280Lake CharlesCommunity - population 81,157
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KennerCommunity - population 64,650Bossier Citypopulation 63,218MonroeCommunity - population 46,622AlexandriaCommunity - population 43,133HoumaCommunity - population 31,671CentralCommunity - population 30,161SlidellCommunity - population 28,440New IberiaCommunity - population 26,849HammondCommunity - population 23,426RustonCommunity - population 22,330SulphurCommunity - population 20,572ZacharyCommunity - population 20,370YoungsvilleCommunity - population 19,038GretnaCommunity - population 17,185NatchitochesCommunity - population 17,165ThibodauxCommunity - population 15,569BroussardCommunity - population 15,312OpelousasCommunity - population 15,176PinevilleCommunity - population 13,966GonzalesCommunity - population 13,837MandevilleCommunity - population 12,973CarencroCommunity - population 12,883West MonroeCommunity - population 12,476BakerCommunity - population 12,147CovingtonCommunity - population 11,686CrowleyCommunity - population 11,216MindenCommunity - population 11,195AbbevilleCommunity - population 10,902Morgan Citypopulation 10,813BogalusaCommunity - population 10,367DeRidderCommunity - population 9,508ScottCommunity - population 9,468Denham SpringsCommunity - population 9,321JenningsCommunity - population 9,280EuniceCommunity - population 9,044BastropCommunity - population 8,922HarahanCommunity - population 8,819WestwegoCommunity - population 8,231PonchatoulaCommunity - population 7,735Breaux BridgeCommunity - population 7,582AddisCommunity - population 7,538RayneCommunity - population 6,983DonaldsonvilleCommunity - population 6,945St. GabrielCommunity - population 6,857OakdaleCommunity - population 6,490WalkerCommunity - population 6,402FranklinCommunity - population 6,284Ville PlatteCommunity - population 6,148PlaquemineCommunity - population 5,985TallulahCommunity - population 5,677PattersonCommunity - population 5,614LeesvilleCommunity - population 5,339GramblingCommunity - population 5,278St. MartinvilleCommunity - population 5,229Port AllenCommunity - population 4,991

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Frequently Asked Questions

What is recorded for population?

Population: 46,799. Source: census_popest_county. Population year: 2024.

What is recorded for land area?

Land area: 558.5 sq mi. Source: census_gazetteer. Geography year: 2023. Water area is excluded.

What is recorded for residents per square mile?

Residents per square mile: 83.8. Population / land area. Population and geography may refer to different years.

What does the model mean by stormwater segments?

Stormwater segments: ~ 221 mi. Scenario: (land area in square miles x 2.2 (assumed road miles per square mile)) x 0.18. Coefficients are assumptions, not locally measured rates. Not a verified object count.

What does the model mean by ditches and channels?

Ditches and channels: ~ 43. Scenario: (square root of land area in square miles) x 1.8. Coefficients are assumptions, not locally measured rates. Not a verified object count.

Why are some figures not shown?

Model values are scenarios, not an inventory or evidence that a service exists. Queues, applications, incidents, service users and unsafe homes are not inferred from population. Missing data does not mean zero.

What can I write in this section?

Topics: service issue, maintenance, accessibility, schedule or timing, clarification, other. Messages are moderated before publication.

Is this an official request?

No. QADM is not an official government website. For an official response, use the official channel of the relevant agency.