Resource Planning

Part of Census and Demographics

Translating population counts into consumption estimates, production targets, and strategic reserves.

Why This Matters

Every community has resources and every community has needs. Resource planning is the process of ensuring that the two are in balance: that production covers consumption, that reserves buffer against shortfalls, and that investments are sized to the population that will use them. Without accurate population data, resource planning is guesswork — and the consequences of guessing wrong in a resource-limited environment range from discomfort to death.

The census provides the denominator for every resource calculation. How much grain to store? Multiply per-person daily caloric need by population by the number of days of reserve you want to hold. How much firewood to prepare for winter? Multiply households by seasonal fuel consumption. How large a water storage cistern to build? Multiply daily per-person water requirement by population by storage days. Every one of these calculations starts with an accurate population count.

The gap between estimated and actual population compounds across all resource categories simultaneously. A 20% undercount in a community of 200 means you are planning for 160 people when you need to feed and shelter 200. That gap, multiplied across food, fuel, water, medicine, and housing, creates chronic shortfalls that are invisible until crisis hits.

Converting Population Data to Consumption Estimates

Start with per-capita consumption benchmarks for each critical resource category. These are rough estimates that should be calibrated to your specific environment and population, but provide a starting framework:

Food:

• Working adult: 2,000–2,500 calories per day. In periods of heavy agricultural labor, 2,800–3,200.
• Child 5–12: 1,400–1,800 calories per day
• Child under 5: 1,000–1,400 calories per day
• Elderly or light work adult: 1,800–2,000 calories per day
• Pregnant or nursing women: add 300–500 calories per day

To translate calories to food quantities, you need to know your primary caloric staples. Grain (wheat, corn, rice, millet) provides approximately 3,300–3,500 calories per kilogram. Root vegetables (potatoes, sweet potatoes) provide 700–1,000 calories per kilogram. Legumes (beans, lentils) provide 3,000–3,500 calories per kilogram when dry.

Using census age-sex data, calculate a “calorie-weighted population equivalent” — the total calories required per day for your actual population, not just raw headcount. A community of 200 with many young children has lower caloric needs per head than a community of 200 working adults.

Water:

• Drinking and cooking: 5–10 liters per person per day minimum
• Hygiene and sanitation: 10–20 liters per person per day
• Livestock: varies enormously by species; goat approximately 10 liters/day, cow approximately 50 liters/day, horse approximately 40 liters/day

Fuel:

• Cooking (wood): approximately 2–4 kg dry wood per meal preparation, or 5–8 kg per household per day for three meals. Varies greatly with stove efficiency.
• Heating (cold climate): 15–30 kg dry wood per household per cold night, depending on dwelling insulation and temperature
• Charcoal for metalworking and smithing: calculate separately by production volume

Shelter:

• Housing capacity: estimate 4–6 square meters of covered sleeping space per person minimum; 8–12 square meters for comfortable occupancy
• Calculate total housing space in current inventory from household records, compare against population-based demand

Building a Resource Balance Sheet

A resource balance sheet compares projected annual production against projected annual consumption, accounting for starting reserves and target ending reserves.

Format:

Resource	Starting Stock	Annual Production	Annual Consumption	Ending Stock	Target Reserve	Gap/Surplus

Example row for grain in a community of 200 adults:

• Annual consumption: 200 people × 350g grain/day × 365 days = 25,550 kg grain equivalent
• Target reserve: 90 days = 7,000 kg
• Starting stock: carry forward from last year
• Required production or procurement: consumption + target reserve - starting stock

When the gap column shows a deficit — you need more than you expect to produce — you have three options: increase production, reduce consumption through rationing, or procure externally through trade or foraging. The census data does not make this decision for you, but it makes the magnitude of the problem visible and plannable.

Update the resource balance sheet after each census and after each major harvest. In years with poor harvests, recalculate immediately and implement rationing protocols before reserves are exhausted.

Adjusting for Demographic Structure

A community’s demographic structure significantly affects its resource needs. A community with many young children has high caloric needs relative to productive labor capacity. A community with many elderly has lower caloric needs but higher health care and care labor demands. A community heavily skewed toward working adults has high labor output but may have insufficient caregiving and teaching capacity for the next generation.

Use your census age pyramid to identify structural resource implications:

Young population (many under 15): high food investment relative to labor output in the short term; high future labor potential. Education and health investment in this cohort pays long-term dividends.

Aging population (many over 50): lower agricultural labor capacity; higher health care and social support demands. If under-15 cohort is small, labor shortage is coming in 10–15 years unless addressed through training, technology, or migration.

Imbalanced sex ratio: a community with significantly more men than women (common after violence or displacement that preferentially removes women) has depressed birth rate and may face population decline. A significantly female-skewed community may have less heavy labor capacity but often higher social cohesion and caregiving capacity.

Planning resource investment with the demographic structure in mind means prioritizing the needs of the dominant cohort while investing in the successor cohort. A community with mostly working-age adults should be investing heavily in children’s nutrition and education now, even if the children are consuming resources that do not immediately produce a return.

Planning for Growth and Decline

Resource planning is not just for the current year — it shapes investment decisions with 5–10 year implications. A new water cistern, an irrigation channel, an expanded granary: these are sized for a projected future population, not just today’s count.

Use your vital events data (from ongoing tracking) and trend analysis to project population 5 years out. If your community has been growing at 3% per year, project 16% growth over 5 years. If the death rate exceeds the birth rate, project decline.

For growing communities, size infrastructure investments for the projected 5-year population, not the current count. A granary built for 200 people that will be needed for 250 in three years is inadequate from the day construction completes.

For declining communities, the investment calculus reverses: avoid capital investment in infrastructure that will exceed future capacity, prioritize maintaining existing productive infrastructure over expanding it, and focus resources on reversing the demographic trend if possible (improve maternal health, reduce child mortality, attract migrants with skill needs).

The census does not tell you what decisions to make. It tells you what population you are planning for and what resources they will need. Every subsequent decision — what to build, what to plant, where to allocate labor — is more likely to succeed when it starts from accurate population data.